Mobs pick up 64 items instead of just one

Steps to reproduce

1. Set difficulty to hard and drop a sword.
2. Spawn zombies until one picks up the sword. Kill the others.
3. Drop a stack of 64 carved pumpkins.

Expected result

The zombie picks up and wears 1 carved pumpkin.

Actual result

The zombie picks up and wears 64 carved pumpkins.

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This affects many mobs that can pick items and gear up. For example a zombie can wear 64 carved pumpkins or pick up 64 diamonds. This bug does not affect foxes. It does however affect Piglins which pick up 64 pork in 1 second instead of waiting between meals. Pls fix this. Also Piglins can wear 64 pumpkins too. They can also pick up 64 gold nuggets which is intended but all the other stuff is not. It will be much appreciated if u fix this.