Below is a list of versions that can corrupt or damage your world and versions that cause crashes. If the given version affects entities, blocks etc. in the way you wouldn't like to and still want to play on that version, keep them in unloaded chunks and remove them from your spawn chunks before updating.
Danger Definitions
| Dangers |
Meaning
|
| PC Threat
|
Harms or crashes the device running the game.
|
| Hardlock
|
Damages the world making it permanently unplayable.
|
| Softlock
|
Damages the world in a way that retains all data, but severely inhibits or completely prevents gameplay (e.g. crash loop).
|
| Chunk Corruption
|
Damages the world by deleting or modifying chunks.
|
| World Files
|
Damages world settings or other miscellaneous world data, such as player inventories, statistics, maps, etc.
|
| Crash
|
Causes the game to crash once. See Softlock for crash loops.
|
| Performance
|
Decreases the performance of the world.
|
| Item Damage
|
Damages items in the world.
|
| Block Damage
|
Damages blocks in the world, and/or discontinued block combinations.
|
| Entity Damage
|
Damages entities in the world.
|
Classic
| Version
|
Issue
|
Bug Report
|
Danger
|
| Classic 0.24 Survival Test 03
|
This version can not save the level. This means all progress made in this version will be lost.
|
N/A
|
World Files
|
| Loading a world from previous versions will permanently corrupt the level.dat file. This means as soon as you quit the game, you won't be able to restore the map (unless you have a backup).
|
N/A
|
Hardlock
|
| Classic 0.27 Survival Test
|
Incompatible with other classic versions. Trying to load the world to or from this version with offline level saving tools causes the world to regenerate.
|
N/A
|
Corruption
|
Indev
| Version
|
Issue
|
Bug Report
|
Danger
|
| Indev 0.31 20091223-1 - Indev 0.31 20100110
|
These versions can not be saved. Progress made in these versions will be lost.
|
N/A
|
World Files
|
| Indev 0.31 20100122 - Indev 20100223
|
Updating to these versions from classic will remove blocks from the edges and top of the world. The bottom of the world will be filled in with bedrock if there is a solid block above and lava if there is an air block above.
|
N/A
|
Block Damage
|
Infdev
| Version
|
Issue
|
Bug Report
|
Danger
|
| Infdev 20100227-1 - Infdev 20100325
|
These early infdev versions use the old indev level format instead of new alpha level format. Indev level format doesn't support infinite worlds. That means these versions can not be saved. Progress made in these versions will be lost.
|
N/A
|
World Files
|
| Infdev 20100313
|
Opening inventory crashes the game.
|
N/A
|
Crash
|
| Infdev 20100327
|
In this version, block entities such as chests and furnaces do not save their contents unless the chunk they are in receives a block change (e.g. placing or breaking), potentially causing the loss of items.
|
N/A
|
Item Damage
|
| Infdev 20100413
|
In this version, placing torches, flowers, and saplings will crash the game.
|
N/A
|
Crash
|
| Infdev 20100615
|
Fluids randomly update, breaking block combinations that have to do with invalid flowing liquids or invalid blocks next to water. The random ticking of fluids placed before Infdev 20100615 stays persistent through Beta 1.7.3, and perhaps further versions.
|
N/A
|
Block Damage
|
| Infdev 20100624
|
In this version, worlds were briefly saved using a new save format that made world files massive. Due to this, the save format changes were reverted the day after.
|
N/A
|
World Files
|
| Infdev 20100625-2
|
In this version, destroying minecarts will crash the game.
|
N/A
|
Crash
|
| Getting within 15 blocks of a previously saved sign will crash the game.
|
N/A
|
Softlock
|
| The removal of the infinite lava item and all cloth blocks results in a variety of crashes. Opening a container containing one of these will crash the game, and having one placed or as an item entity within render distance will make the world unplayable until their ID is recycled as another block ID. See Indev_Level_Conversion#Block_Conversion for when these IDs are re-added to the game.
|
N/A
|
Softlock
|
Alpha
| Version
|
Issue
|
Bug Report
|
Danger
|
| 0.1.0, - 0.1.4
|
These alpha server versions do not have working server side inventory, and containers do not save.
|
N/A
|
Item Damage
|
| Alpha v1.1.1
|
While this version does not cause any damage to your Minecraft world, it can turn your entire computer screen gray, making it impossible to use your computer until it is rebooted. Depending on your graphics card, this version can turn your screen black, flashing red rapidly, potentially causing seizures. This was fixed in the very next version, Alpha v1.1.2. Launchers such as Betacraft, Codex-Ipsa and MineOnline patch this issue.
|
N/A
|
PC Threat
|
Beta
| Version
|
Issue
|
Bug Report
|
Danger
|
| Beta 1.6 Test Build 3
|
In multiplayer, day and night do not sync between the client and the server. If it is client-side night and server-side day, the player will be able to sleep, but sleeping will not skip the night, and the player will not be able to exit the bed. This requires the player to either crash their client or be kicked by a server operator in order to leave the bed.
|
N/A
|
Softlock
|
| Attempting to shift-click items from a chest into a full inventory or from your inventory into a full chest will crash the game.
|
N/A
|
Crash
|
| Attempting to shift-click items into or out of a dispenser also crashes the game, regardless of fill level.
|
N/A
|
Crash
|
| Placing a map into your inventory on a server will cause a crash every time the player is ticked.
|
N/A
|
Softlock
|
| Beta 1.6
|
Shift clicking an item when your inventory is full causes the game to crash.
|
N/A
|
Crash
|
| Beta 1.7
|
Right-clicking on a sheep crashes the game.
|
N/A
|
Crash
|
| Pushing a sticky piston into the redstone line that powered the pushing piston crashes the game. If a piston pushes a redstone wire, the game will crash.
|
N/A
|
Crash
|
| Beta 1.8 Pre-release
|
Updating to this version will set the world features tag to 0, meaning no structures will ever spawn in your world again except dungeons. This of course could be changed by editing the level.dat, but that would likely be considered cheating
|
N/A
|
World Files
|
| Beta 1.8 Pre-release 2 ;)
|
Attempting to shift-click an item from a chest into a full inventory or from your inventory into a full chest will crash the game.
|
N/A
|
Crash
|
| Beta 1.8 Pre-release - Beta 1.8.1
|
Dying from an arrow shot from a dispenser in multiplayer will crash the server.
|
N/A
|
Crash
|
| Beta 1.8 Pre-release, Beta 1.8 Pre-release 2 ;)
|
Dying with XP in multiplayer in this version will duplicate XP, and the XP orbs will quickly start to lag the client and server.
|
N/A
|
Performance
|
Full release
1.0
| Version
|
Issue
|
Bug Report
|
Danger
|
| Beta 1.9 Prerelease, Beta 1.9 Prerelease 2
|
Dying from an arrow shot from a dispenser in multiplayer will crash the server.
|
N/A
|
Crash
|
| Beta 1.9 Prerelease 3-1
|
In Beta 1.9 Prerelease 3-1, dying and respawning or entering a world will give the player a stack of enchanting tables, bookshelves, end portal frames, and end portal block. Hovering over an end portal block in a GUI with your cursor will crash the game. If piston head items or moving piston items have been obtained in previous versions, hovering over either will also result in a crash. This likely applies to even more debug items, such as double slabs, and the currently unobtainable melon and pumpkin stems.
|
N/A
|
Crash
|
| Attempting to shift-click an item into an enchanting table will cause the game to crash.
|
N/A
|
Crash
|
| Beta 1.9 Prerelease 4
|
Breaking a Chest with enchanted items in it will cause the dropped items to lose their enchantments.
|
N/A
|
Item Damage
|
1.2
| Version
|
Issue
|
Bug Report
|
Danger
|
| 12w07a, 12w07b
|
Generating the End will generate a completely void dimension, with no blocks except for the obsidian platform (and an ender dragon).
|
N/A
|
Softlock
|
1.3
| Version
|
Issue
|
Bug Report
|
Danger
|
| 12w21a
|
In 12w21a, rendering the spawner animation freezes the game.
|
N/A
|
Softlock
|
| Dropping an item and reloading the world makes it unplayable until the item is picked up. If it is picked up instantly upon world load, the crash will not occur.
|
N/A
|
Softlock
|
1.4
From 1.4.2, when crafting something that gives more than one item as an result (e.g. diamond blocks to diamonds, stairs, slabs) and not all resulting items fit into the inventory, the overflow gets deleted.
| Version
|
Issue
|
Bug Report
|
Danger
|
| 1.4.3
|
In this version, the iron golem walking animation crashes the game.
|
MC-2007
|
Crash
|
| 12w49a
|
In servers of this version, random blocks are shown client side in the end and nether, making it quite laggy and difficult to move around in those dimensions. These ghost blocks may be removed temporarily by forcing the server to send the proper data by right-clicking on them.
|
MC-4249
|
Performance
|
| 1.4.7
|
Destroying an empty jukebox that was previously saved will crash the game and regenerate the chunk.
|
MC-2711
|
Crash + Chunk Corruption
|
1.5
When crafting something that gives more than one item as a result (e.g. diamond blocks to diamonds, stairs, slabs) and not all resulting items fit into the inventory, the overflow gets deleted.
From 1.5.1[test] pushing a locked chest onto a player's head crashes their game.[1]
Redstone interaction with unobtainable-piston-blocks crashes the game.[2]
| Version
|
Issue
|
Bug Report
|
Danger
|
| 13w01a
|
Creating a comparator subtract loop will softlock the game.
|
MC-5728
|
Softlock
|
| 13w01a - 13w02b
|
Destroying an empty jukebox that was previously saved will crash the game and regenerate the chunk.
|
MC-2711
|
Crash + Chunk Corruption
|
| 13w02a
|
Grass with data values over 2 (Green Shrub) cause a game crash when rendered. This also applies to many other blocks, such as invalid data value wheat and cocoa beans[test].
|
N/A
|
Softlock
|
| 13w02a, 13w02b
|
Many unobtainable block items crash the game when rendered, such as Locked Chests[test].
|
|
|
| 13w02b - 13w05a
|
Dropping an anvil on a redstone component crashes the game.
|
MC-7094
|
Softlock
|
| 13w03a
|
If a minecart with hopper falls into the void, the game will crash. After that occurs, the game will not be able to load again in 13w03a, since attempting to rejoin the world will load the hopper minecart again.
|
MC-7619
|
Softlock
|
| 13w04a
|
Trying to equip a helmet by clicking while looking at blocks will crash the game.
|
MC-8189
|
Crash
|
| 13w05a-1, 13w05a-2
|
Destroying a jukebox with a disc inside crashes the game.
|
MC-8775
|
Crash
|
| 13w06a-1
|
Loading a chunk that contains a hopper minecart will crash the game. After that occurs, the game will not be able to load again in 13w06a-1, since attempting to rejoin the world will load the hopper minecart again.
|
MC-9316
|
Softlock
|
| 2.0
|
In this version torches turn into burnt-out torches over time. This means when updating past 2.0, all the burnt out torches will be deleted, or if updated to 1.7-1.12, will be turned into acacia leaves.
|
N/A
|
Block Damage
|
| If a 2.0 exclusive item is dropped on the ground and then updated to a version prior to 1.7.1, the chunk will be regenerated.
|
MC-30940
|
Chunk Corruption
|
| Droppers will only drop fish when activated, despite the item inside. This causes item loss, and could break redstone machines.
|
N/A
|
Item Damage
|
| In 2.0, the Redstone Bug is added. These spawn when redstone dust is deactivated and then reactivated. This could cause severe performance issues in worlds with a lot of redstone machines.
|
N/A
|
Performance
|
| Furnaces have an increasing chance to explode when lit (often exploding after 1 item is smelted). This could destroy builds and redstone contraptions.
|
N/A
|
Block Damage
|
1.6
When crafting something that gives more than one item as an result (e.g. diamond blocks to diamonds, stairs, slabs) and not all resulting items fit into the inventory, the overflow gets deleted.
From 1.6.2[test] the game crashes on pressing the inventory close key and an item manipulation key at the same time in large chests.[3]
Pushing a locked chest into a player's head crashes their game.[1]
| Version
|
Issue
|
Bug Report
|
Danger
|
| 13w16a
|
In multiplayer in this version, mounting a pig, horse, boat, or minecart will kick the player from the server. When logging back in, the player will be riding the entity again and will be kicked again, effectively banning the player from the server. The only ways to fix this are to delete the "riding" tag in players.dat or to update to 13w16b or later.
|
MC-13628
|
Softlock
|
| 13w16a - 13w26a
|
Binding "sneak" to any mouse button and trying to mount an entity crashes the game.
|
MC-14126
|
| 13w21a
|
In this version the game will crash frequently, not much is known about the cause of the crash but this version is mostly unplayable.
|
MC-16353
|
Crash
|
1.7
When crafting something that gives more than one item as an result (e.g. diamond blocks to diamonds, stairs, slabs) and not all resulting items fit into the inventory, the overflow gets deleted.
The game crashes on pressing the inventory close key and an item manipulation key at the same time in large chests.[3]
Upon rendering a hopper with a data value greater than 5, the game will crash[test].
Updating the piston-extension block will crash the game, this block can be updated with R-Mouse, L-Mouse, and neighboring block changes[test].
| Version
|
Issue
|
Bug Report
|
Danger
|
| 13w36a - 13w39b
|
Pushing a locked chest into a player's head crashes their game.
|
MC-12984
|
Crash
|
| 13w37a - 1.7 (fixed in 1.7.1)
|
The game will crash when an invalid ID item entity is loaded. This will also regenerate the chunk it is in.
|
MC-30940
|
Crash + Chunk Corruption
|
| 13w38b
|
Updating to this version will not corrupt your world, but loading a chunk containing a minecart will crash the game. This results in not being able to load the world again in 13w38b, since attempting to rejoin the world will load the minecart again.
|
MC-31876
|
Softlock
|
1.8
When crafting something that gives more than one item as an result (e.g. diamond blocks to diamonds, stairs, slabs) and not all resulting items fit into the inventory, the overflow gets deleted.
The game crashes on pressing the inventory close key and an item manipulation key at the same time in large chests.[3]
| Version
|
Issue
|
Bug Report
|
Danger
|
| 14w02a
|
Updating redstone dust that updates tripwire crashes the game.
|
N/A
|
Crash
|
| 14w03a
|
In 14w03a, placing a flower pot will crash the game.
|
MC-45004
|
Crash
|
| 14w04a
|
In 14w04a, being hit by a mob in a world connected to via LAN would kick the player.
|
MC-45496
|
Crash
|
| 14w10b
|
In 14w10a, player data was changed to use UUID instead of username. In 14w10a, username-based player data automatically converted to the new UUID-based system, but in 14w10b, this process was faulty, resulting in having a complete, but not usable <username>.dat, along with a blank <UUID>.dat, which is used. If your world is loaded in this version, your player data will not be deleted or corrupted, but will not be usable without editing file names.
|
N/A
|
World Files
|
| 14w18a
|
Rendering an item frame crashes the game. This results in not being able to load the world in 14w18a anymore, since attempting to rejoin the world will load the item frame again.
|
MC-54008
|
Softlock
|
| 14w25a
|
Placing a ladder on the ground next to a block you can place a ladder on crashes the game.
|
MC-57234
|
Crash
|
| Placing an oak log crashes the game.
|
MC-56893
|
Crash
|
| Loading invalid data value log2s and leaves2s crashes the game. This probably also applies to subsequent versions[test].
|
N/A
|
Crash + Softlock
|
| 14w25a, 14w25b
|
Loading a DV 0 chest will crash the game.
|
MC-57470
|
Softlock
|
| 14w26a, 14w26b
|
Updating to these versions causes some blocks in your world to be corrupted, which will be deleted in 14w26c.
|
MC-59294
|
Chunk Corruption
|
| 14w26c
|
From this version until 19w37a (1.15 snapshot), DV 0 chests will be deleted upon loading or world optimization.
|
MC-123686
|
Block Damage
|
| 14w27a
|
Updating to this version does not directly corrupt your world. However, loading a chunk that contains a minecart chest will crash the game. After that occurs, the game will not be able to load again in 14w27a, since attempting to rejoin the world will load the minecart again.
|
MC-59972
|
Softlock
|
| 14w27b
|
Loading a stronghold will crash the game. Once you enter the location of a stronghold it will crash, and reopening the world will continue to crash the game, until the stronghold is completely loaded.
|
MC-60556
|
Crash
|
| Breaking double tall flowers can occasionally crash the game.
|
MC-60707
|
Crash
|
| 14w28a
|
When a plant receives a random tick, the game will crash. The only way to avoid this is to either set the gamerule randomTickSpeed to 0, which will also prevent plants from growing, or to have no plants within render distance to be randomly ticked.
|
MC-61059
|
Softlock
|
| 14w30c, 14w31a
|
Breaking a door while a villager is interacting with it crashes the game.
|
MC-64727
|
Crash
|
| 14w34a
|
Furnaces delete any items newly placed inside (old furnaces will retain their contents), and a hopper attempting to place items or fuel inside a furnace with empty slots for their respective item type will crash the game.
|
MC-64727
|
Item Damage + Crash + Softlock
|
| 1.8.2-pre5
|
Inserting a music disc into a jukebox crashes the game.
|
MC-77030
|
Crash
|
| 15w14a
|
Every Carrot on a Stick items are deleted from the world.
|
N/A
|
Item Damage
|
| All zombies spawn with the ability to pick up items and skeletons constantly drop bone meal. This means that zombies can easily pick up the bonemeal and never despawn. Bonemeal item entities over time will also decrease performance.
|
N/A
|
Performance
|
1.9
When crafting something that gives more than one item as an result (e.g. diamond blocks to diamonds, stairs, slabs) and not all resulting items fit into the inventory, the overflow gets deleted.
The game crashes on pressing the inventory close key and an item manipulation key at the same time in large chests.[3]
| Version
|
Issue
|
Bug Report
|
Danger
|
| 15w31a
|
Updating to this version will alter any signs. Each time a sign is reloaded (if just on relog or upon chunk reload) it will gain more characters (specify the equation for character growth). Eventually, after the sign reaches somewhere around 65,535[test] characters, loading the sign will crash the game, and can essentially force the player to no longer be able to enter the world until unknown version[test].
|
MC-83187
|
Block Damage + Softlock
|
| 15w31a - 15w32a
|
Attempting to join a server on this version will kick the client with a MalformedJSONException.
|
MC-82968
|
Softlock
|
| 15w32a
|
Shooting the ender dragon with a bow crashes the game.
|
MC-85110
|
Crash
|
| 15w32b
|
When playing in this version, it is possible for entities not within spawn chunks but within render distance of spawn to be deleted, unless in minecarts.
|
MC-85285
|
Entity Damage
|
| 15w33a - 15w40a
|
Tamed cats from before 1.8.8 (not 1.8.9) regenerate the chunk they were in.
|
MC-89699
|
Chunk Corruption
|
| 15w33c
|
Breaking a skull causes a crash.
|
MC-86137
|
Crash
|
| 15w35a
|
Zombies spawned in this snapshot will have no AI, so they will not take up the mob cap.
|
MC-87193
|
Performance
|
| 15w35a, 15w35b
|
Doors will turn into half doors upon the chunk being loaded.
|
MC-87196
|
Block Damage
|
| 15w35c
|
Punching a wolf crashes the game.
|
MC-87563
|
Crash
|
| Using a carrot on a stick while on a pig crashes the game.
|
MC-87567
|
Crash
|
| Killing a named silverfish crashes the game.
|
MC-87569
|
Crash
|
| 15w36a
|
Stepping off a pressure plate crashes the game.
|
MC-87869
|
Crash
|
| 15w36a, 15w36b
|
Looking at an Enderman crashes the game.
|
MC-87881
|
Crash
|
| 15w37a
|
Going outside of height limit or into the void with F3 open crashes the game.
|
MC-88357
|
Crash
|
| The game will crash when crafting an empty shield with a banner.
|
MC-88377
|
Crash
|
| 15w37a - 15w51b
|
Every hopper minecart placed before 15w37a no longer pick up items. (Enabled:0b).
|
MC-88668
|
Entity Damage
|
| 15w38b
|
Shift clicking into a full container deletes the items.
|
MC-88929
|
Item Damage
|
| 15w39a, 15w39b, 15w39c
|
Hopper minecarts and chest minecarts that have duplicate UUIDs cause their contents to explode upon loading the chunks while still containing the items, effectively working as a duplication method. However, this over time could cause a lot of tick lag in heavily traversed chunks with mineshafts or player placed minecart chests/hoppers. This could also break certain redstone contraptions.
|
MC-89602
|
Performance
|
| 15w40a
|
It is not possible to connect to servers.
|
MC-89643
|
Softlock
|
| 15w42a - 15w44b
|
Multiplayer servers crash when breaking frosted_ice with silk touch. In singleplayer, this produces a air item.
|
MC-90578
|
Crash
|
| 15w44a
|
When combining and/or renaming a item in an anvil, clicking the item out of the output slot would delete the item. This can be avoided by shift clicking.
|
MC-91521
|
Item Damage
|
| 15w44b - 1.9-pre2
|
When updating a 1.7 or older world to versions within this range, signs will only use the first word of each line, and books only use 1 word.
|
MC-92525
|
Block + Item Damage
|
| 15w46a
|
Minecart unloaders (Comparator related bug) causes a crash loop.
|
MC-92588
|
Crash
|
| Redstone blocks emit power through blocks (Potentially breaking redstone machines).
|
MC-92562
|
Block + Item Damage
|
| 15w49a
|
Client crashes when fully depleting an item stack.
|
MC-93592
|
Crash
|
| 15w49b
|
If a fireball hits an entity, the game crashes.
|
MC-93655
|
Crash + Softlock
|
1.10
When crafting something that gives more than one item as an result (e.g. diamond blocks to diamonds, stairs, slabs) and not all resulting items fit into the inventory, the overflow gets deleted.
The game crashes on pressing the inventory close key and an item manipulation key at the same time in large chests.[3]
| Version
|
Issue
|
Bug Report
|
Danger
|
| 1.10
|
If a player does not load the central end island in a world session, the DragonFight tag will be erased. This has a few side effects:
- The
Gateways list will regenerate. Whenever a dragon dies again, they will be regenerated in the order they were first created.
- The
ExitPortalLocation will be recalculated when an end crystal is next placed.
- The dragon will be marked as killed, but legacy dragon fight detection will restore if a dragon is alive immediately upon the end reloading.
- The dragon unique UUID will be erased, but will be restored if a live dragon is found. This changes whenever a new dragon is summoned anyways.
The method that determines the new ExitPortalLocation will take the following steps:
- Find the highest solid or liquid block at 0,0, and subtract 1 from the Y position.
- If the block at that location is bedrock, and the Y level is greater than 63, subtract 1 from the Y position.
- Repeat step 2 until the condition is no longer met.
As a result of the exit portal location being changed, one must place the end crystals at the new portal location rather than the physical portal to resummon the dragon, often requiring the use of bedrock breaking to remove an old portal that is in the way.
This may also lead to a softlock[4] of the end portal if there are no blocks in the column at 0,0, as the ExitPortalLocation will have a Y value of -2, resulting in no end portal blocks being placed.
|
MC-103497
|
World Files + Softlock
|
1.11
The game crashes on pressing the inventory close key and an item manipulation key at the same time in large chests.
| Version
|
Issue
|
Bug Report
|
Danger
|
| 16w32a
|
When crafting something that gives more than one item as an result (e.g. diamond blocks to diamonds, stairs, slabs) and not all resulting items fit into the inventory, the overflow gets deleted.
|
N/A
|
Item Damage
|
| Casting a fishing rod into a nether portal and reeling it in causes the game to crash.
|
MC-106014
|
Crash
|
| Dispensing a pumpkin or a wither skull without spawning iron golem or wither crashes the game.
|
MC-106036
|
Crash
|
| 16w39a
|
Inserting fuel into furnace crashes the game.
|
MC-107392
|
Crash
|
| Placing a shulker box into non full blocks with metadata, e.g. signs, extended pistons, or flowers, crashes the game.
|
MC-107501
|
Crash
|
| Llamas fail to save inventory NBT data, causing a crash when interacting with a Llama after reloading the world.
|
MC-107536
|
Item Damage + Crash
|
| 16w43a
|
Casting a fishing rod directly up or down crashes the server.
|
MC-109256
|
Crash
|
1.12
Up to 1.12.2 the game crashes on pressing the inventory close key and an item manipulation key at the same time in large chests.[3]
Also to note, throughout 1.12 snapshots there are many recipe book item deletion methods.
| Version
|
Issue
|
Bug Report
|
Danger
|
| 17w13a
|
The game crashes when trying to use crafting book and items needed are in off-hand or armor slots.
|
MC-114936
|
Crash
|
| 17w13a - 17w13b
|
Items in the crafting table disappear when selecting a recipe.
|
MC-114943
|
Item Damage
|
| The game crashes when cancelling or changing the recipe in the recipe book with a full inventory.
|
MC-115204
|
Crash
|
| 17w14a, 17w15a
|
The client crashes when using the new shift-click recipe book feature in a server.
|
MC-115528
|
Crash
|
| 17w15a
|
Right clicking on the underside of a block with a torch crashes the game.
|
MC-115807
|
Crash
|
| 17w16a
|
The game crashes when changing dimension or relogging with a full inventory.
|
MC-116398
|
Crash
|
| 17w16b - 17w17b
|
Placing a torch on a wall with a fence gate underneath causes the game to crash.
|
MC-116515
|
Crash
|
| 17w17a
|
Entering the end causes the game to crash.
|
MC-116656
|
Crash + Softlock
|
| 17w17b
|
Attempting to place a snow layer on top of a fence gate crashes the game.
|
MC-116931
|
Crash
|
| 1.12-pre3
|
The recipe book crashes the game upon selecting a previously used recipe without closing the GUI.
|
MC-117560
|
Crash
|
| The game crashes when you open the advancements window while no advancements have been complete.
|
MC-117564
|
Crash
|
1.13
1.13 versions and onwards have a high chance of regenerating chunks especially with very old worlds
There are also countless crashes and saving issues not mentioned here during development versions
The unstable blockstate for TNT is missing from the game from 17w47a to 1.13, and updating to this version will cause unstable TNT to convert to normal TNT.
From 17w45b to 18w14b, flying directly up kicks the player.[5]
From 18w01a to 1.13 pre2, terracotta, spawn egg and entity statistics are deleted.[6]
Various blocks do not update correctly throughout 1.13 snapshots including stairs, redstone, glass panes, iron bars, walls, fences etc..[7][8][9]
| Version
|
Issue
|
Bug Report
|
Danger
|
| 17w47a
|
Entity statistics do not exist, meaning that updating to this snapshot will delete all entity specific statistics.
|
N/A
|
World Files
|
| 17w47a - 17w49b
|
Container changes don't update nearby hoppers, potentially breaking redstone machines.
|
MC-122159
|
Block Damage
|
| 17w47b
|
All updated spawn eggs are removed.
|
N/A
|
Item Damage
|
| A skeleton killing a creeper crashes the game.
|
MC-122373
|
Crash
|
| Player is kicked from multiplayer when opening a chest or shulker.
|
MC-122347
|
Crash
|
| 17w48a
|
Crash relating to sticky pistons and carpet built in a particular formation.
|
MC-122573
|
Crash
|
| 17w47b - 18w03a
|
The game crashes when a player dies from a player damage source (e.g. shot arrow, lit TNT, splash potions).
|
MC-122883
|
Crash
|
| 17w49b
|
Pistons lose their piston head when pushing the block that powers it, potentially breaking redstone machines.
|
MC-122987
|
Block Damage
|
| 18w01a
|
Server crashes when an item frame with a map is loaded, and no player has that map in their inventory.
|
MC-123771
|
Crash + Softlock
|
| 18w06a
|
Game crashes when generating snow biomes.
|
MC-124903
|
Crash
|
| Game crashes when opening furnace recipe book.
|
MC-124930
|
Crash
|
| 18w06a - 18w07c
|
Game crashes when generating a mansion.
|
MC-125124
|
Crash
|
| 18w06a - 18w19b
|
Command block minecarts vanish upon reloading a world.
|
MC-124998
|
Entity Damage
|
| 18w08b
|
Can potentially update blocks on chunk borders, potentially destroying discontinued block combinations in nether after updating from 1.12.2. Didn't manage to replicate[test].
Video reference: https://youtu.be/NvZ8J05w3iU
|
N/A
|
Block Damage
|
| 18w08b - 18w14b
|
Fish unrestricted spawning causing world to inevitably crash from the number of entities.
|
MC-126185
|
Performance
|
| 18w10d
|
Big chests are split into small chests.
|
MC-126559
|
Block Damage
|
| 18w11a, 18w14a
|
In these versions, drowned cause a ticking entity crash. Re-joining the world will load the drowned again, making it impossible to play the world again in either of these versions.
|
MC-127242
|
Softlock
|
| 18w19a
|
Loading a world from a previous version will completely reset all chunks in the world, deleting all builds, entities, structures, and blocks. Downgrading will not fix the world, meaning there is no way to recover anything without loading a backup.
|
N/A
|
Chunk Corruption
|
| 18w19b - 18w20b
|
Game crashes when loading a chunk with a player head in a chest.
|
MC-129517
|
Softlock
|
| 18w20a
|
Loading a world in 18w20a deletes command block NBT.
|
MC-129615
|
Block Damage
|
| 18w21a, 18w21b
|
Dolphins spawn infinitely outside of despawn radius.
|
MC-130197
|
Performance
|
| 18w21b, 18w22a
|
Named items stored in containers and nametagged mobs do not have their names updated correctly.
|
MC-130345
|
Item + Entity Damage
|
| All maps become "Map #0" when updating from 1.12.2.
|
MC-130400
|
Item Damage
|
| 18w22a
|
Item frame drops when you load a world from 1.12.2.
|
MC-130422
|
Entity Damage
|
| Stack overflow error when opening a 18w21b world in 18w22a.
|
MC-130424
|
Softlock
|
| 18w22b, 18w22c
|
Updating to this version will convert all enchanted books, including those in villager trades, will have their enchantments converted to Protection. The books will have enchantment levels and number of enchantments preserved, meaning that books can be obtained with Protection V or multiple Protection enchantments.
|
MC-130489
|
Item Damage
|
| 18w30b
|
Placing or dispensing wither skeleton skull crashes the game.
|
MC-134967
|
Crash
|
| 1.13-pre3
|
As part of the 1.13 Flattening, enchantments were changed from using a numeric enchantment tag to using a word-based enchantment tag. 1.13 automatically converts the numeric tag to the word based tag, but due to a bug in 1.13-pre3, any enchanted book, including those in villager trades, updated directly from any version from 12w49a-18w20c will not convert, even in later versions. Numeric tags are not readable in 1.13+, leading to the enchantments on these books being lost.
|
N/A
|
Item Damage
|
| 1.13-pre5
|
New entity IDs caused many entities to disappear and some statistics/advancements related to these entities.
|
MC-132320
|
World Files
|
| 1.13.1, 1.13.2-pre1, 1.13.2-pre2
|
⇧ Shift-right-clicking on a shulker box using bone meal causes the game to crash.
|
MC-136888
|
Crash
|
1.14
19w05a to 1.14-pre5 Reloading chunks with a sign having over 65535 characters softlocks the game during reloading process.
| Version
|
Issue
|
Bug Report
|
Danger
|
| 18w46a, 18w47a, 18w47b
|
The game crashes if scaffolding falls onto a shulker box.
|
MC-139378
|
Crash
|
| 19w04a, 19w04b
|
Reloading chunks with a sign having over 65535 characters crashes the game.
|
N/A
|
Crash + Softlock
|
| 19w12a
|
In this version, loading a chunk containing an active conduit will crash the game. When the world is loaded again, the conduit will again be loaded, crashing the game. This results in the world not being playable in 19w12a again.
|
MC-146246
|
Crash + Softlock
|
| 19w13a
|
In this version, villager breeding will crash the game.
|
MC-146783
|
Crash
|
| 1.14 Pre-Release 4 - 1.14
|
Old villagers lose trades when updated and loaded in this version range.
|
MC-148923
|
Entity Damage
|
| 1.14 - 1.14.1
|
Entities on chunk borders will be deleted when the world is reloaded. This can result in the loss of villagers, item frames, armour stands, animals, nametagged mobs, etc. 1.14.1 also has reports of chunks failing to load and regenerating, potentially deleting player builds, but this is unconfirmed.
|
N/A
|
Entity Damage
|
| 1.14.1-pre1 - 1.14.2
|
Breaking villager's point of interest crashes the game.
|
MC-151185
|
Crash
|
1.15
| Version
|
Issue
|
Bug Report
|
Danger
|
| 19w35a, 19w36a
|
The game crashes when trying to render entities inside slime or magma cube spawners.
|
MC-160248
|
Crash + Softlock
|
| 19w36a
|
Updating to this version will set the following game rules to false:
- drowningDamage
- fallDamage
- fireDamage
- doInsomnia
These gamerules being set to false means the player will no longer take any damage from drowning, falling, fire or lava, and no phantoms will spawn. These gamerules cannot be set back to true without commands.
|
MC-160464
|
World Files
|
| 19w38a
|
Game crashes when breaking blocks.
|
MC-161268
|
Crash
|
| 19w39a
|
Game crashes when player model is rendered after the player is stung by a bee.
|
MC-161882
|
Crash
|
1.16
| Version
|
Issue
|
Bug Report
|
Danger
|
| 20w07a
|
All upgraded villagers will disappear.
|
MC-172078
|
Entity Damage
|
| 20w13a
|
In this version, dying without a bed or respawn anchor will prevent you from moving or interacting with the world after respawn, soft locking you until you update to 20w13b or later.
|
MC-176227
|
Softlock
|
| 20w14∞
|
20w14∞ is an April Fool's snapshot that adds the ability to travel to many randomly generated dimensions. Some of these dimensions will crash the game, leading to the player not being able to leave the dimension.
|
N/A
|
Softlock
|
| 20w20b, 20w21a
|
Opening your world in either of these versions will clear the end gateways list in level.dat, preventing any new end gateways from generating, even in later versions.[99] If your world is loaded in one of these versions, any of the 20 end gateways not generated prior to loading in these versions will never generate.
|
MC-184482
|
World Files
|
| 20w21a
|
Any structures generated in previous versions will not be considered valid, causing mobs to no longer spawn there.
|
MC-184740
|
World Files
|
| 1.16-pre1
|
In this version, world generation settings are not saved, causing weird chunk errors and borders. Dimension settings are also removed from level.dat, disabling the Nether and End dimensions permanently, in this version and in future versions, unless level.dat is restored to a state in which these settings are present. Worlds loaded in this version will not work in any future versions without world save insertion.
|
MC-187358
|
Hardlock
|
| 20w27a
|
If a piglin or piglin brute zombifies in the overworld or end, the world crashes.
|
MC-193073
|
Crash
|
| 20w28a
|
Structure data of pillager outposts, villages, and bastion remnants get lost when updating a world to 20w28a.
|
MC-194300
|
World Files
|
| 20w28a, 20w29a
|
This version changes the Nether biome map to what they should be according to the seed, overwriting biome maps that were generated in earlier snapshots.
|
MC-194273
|
World Files
|
1.17
WARNING, playing on 21w06a to 21w14a will prevent you playing the remaining 1.17 versions.
This is due to these versions having a different world height that was reverted in 21w15a. The world can be upgraded to 1.18 versions.
| Version
|
Issue
|
Bug Report
|
Danger
|
| 21w03a - 21w19a
|
Updating to this version on a world from before 18w21a will not convert enchantments to the new format.
|
N/A
|
Item Damage
|
| 21w05a
|
In this version, the game will randomly freeze and crash and the use key causes a lot of lag issues.
|
MC-214233
|
Crash
|
| Copper blocks from previous versions are incorrectly updated. Some blocks disappear, and the fully weathered copper blocks revert into the penultimate weathered block stage.
|
MC-213802
|
Block Damage
|
| 21w18a, 21w19a
|
Dying in nether portal causes a soft lock, where player can't respawn. Updating to 21w20a fixes the issue.
|
MC-225253
|
Softlock
|
1.18
| Version
|
Issue
|
Bug Report
|
Danger
|
| 1.18-exp7
|
Forceloading world to this version deletes all spawners' data and makes them pig spawners.
|
N/A
|
Block Damage
|
| 21w37a
|
Forceloading older worlds into this version either crashes game, or deletes all chunks.
|
N/A
|
Chunk Corruption
|
| 21w37a - 21w40a
|
Worlds created with seed REDApRES or any other seed equating to 0 crash upon loading new 1.18 biomes.
|
MC-237330
|
Softlock
|
| 21w39a - 21w42a
|
Upgrading to any of these versions will prevent caves from generating below previously generated terrain.
|
N/A
|
Block Damage
|
| 21w43a
|
Upgrading from ≤1.11.2 to this version doesn't properly update many block states, leading to breaking some builds or even destroying some discontinued block combinations.
|
MC-239856 MC-239899
|
Block Damage
|
| 22w06a
|
Opening the beacon GUI in this snapshot will crash the game.
|
MC-248523
|
Crash
|
1.19
| Version
|
Issue
|
Bug Report
|
Danger
|
| 22w13a
|
Generating a structure with an allay (usually a pillager outpost or a woodland mansion) will crash the game. After that occurs, the game will not be able to load again in 22w13a, since attempting to rejoin the world will load the allay again.
|
MC-249712
|
Crash + Softlock
|
| 22w13oneBlockAtATime
|
Contents of dispensers and droppers are lost.
|
N/A
|
Item Damage
|
| Item entities are removed.
|
N/A
|
Item Damage
|
1.20
| Version
|
Issue
|
Bug Report
|
Danger
|
| 1.20 Pre-release 1
|
Torchflower_crop causes the game to crash when pollinated by bees and softlocks the world.
|
MC-262508
|
Crash + Softlock
|
| 1.20.3 Pre-release 1
|
Any minecraft:grass items will be deleted, unless they are stored within bundles. The related statistics will also be deleted.
|
MC-266890
|
Item Damage
|
| 24w03a, 24w03b
|
Shooting a breeze with a piercing crossbow causes the game to crash.
|
MC-267937
|
Crash
|
| 1.20.5
|
The two lower items in trader llama chests are destroyed upon upgrading into 1.20.5 from previous versions.
|
MC-271109
|
Item Damage
|
1.21
| Version
|
Issue
|
Bug Report
|
Danger
|
| 24w19a
|
In 24w19a, killing a villager crashes your game.
|
MC-271843
|
Crash
|
Education Edition
| Version
|
Issue
|
Bug Report
|
Danger
|
| MinecraftEdu 1.7.10 Build 22
|
Attempting to ride minecart crashes the game.
|
N/A
|
Crash
|
| Throwing an enderpearl softlocks the game.
|
N/A
|
Softlock
|
| MinecraftEdu 1.8.9 Build 3
|
Loading a naturally spawned minecart with chest from a mineshaft softlocks the game.
|
N/A
|
Softlock
|
References
