Java Edition:Zero Drop Chance Left Hand Mob
All mobs have the tag HandDropChances, which influences the chance of them dropping an item they're holding. This value is always set to “[0.085f, 0.085f]”. However, by updating any mob from 1.8.9 or before directly to 15w32a (1.9 snapshot) or later, the value for the left hand is set to “[0.085f, 0.0f]”. This means they will never drop an item they are holding in their left hand.[test] Since this tag is not noticeable, this is a unobservable discontinued feature. However, because the version gap follows the same path as dual wielding mobs, the only mobs affected by this tag are dual wielding mobs themselves. This also affects every single mob from 1.8.9 or before (see list below).
- Bat
- Blaze
- Cat
- Cave Spider
- Chicken
- Chicken Jockey
- Cow
- Creeper
- Donkey
- Drowned (Must be converted afterward)
- Elder Guardian
- Ender Dragon
- Enderman
- Endermite
- Ghast
- Guardian
- Horse
- Iron golem
- Magma Cube
- Mooshroom
- Mule
- Ocelot
- Pig
- Rabbit
- Sheep
- Silverfish
- Skeleton
- Slime
- Spider
- Spider Jockey
- Squid
- Villager
- Witch
- Wither
- Wither Skeleton
- Wolf
- Zombie
- Zombie Villager
- Zombified Piglin
Variant
By updating a zombie meeting certain conditions[test] from 1.8.9 or before to 15w32a, the zombie will have the HandDropChances tag equal to “[2.0f, 0.0f]”, and the ArmorDropChances tag equal to "[2.0f, 2.0f, 2.0f, 2.0f]".