Baby Zombie XP Duplication bug

[IBeHunting]

So...

A player on my server has obtained 24k xp levels by killing a stack of baby zombies. It appears that every time he kills a baby zombie in the stack, it just multiplies the player's xp by ~1.5, which gets out of hand very quickly. I assume this is related to the stackmob plugin, so please take a look the xp rewards when killing baby mobs.

Thanks!

[ploppyperson]

Is this only with baby zombies?

[IBeHunting]

Yes it appears to only be from the baby zombies. When I killed one myself i went straight to 20k xp levels, so it seems to be a problem with the xp drop amount from baby mobs compounding every time you kill one from the stack. Its worth noting we have the death animations turned off so it doesn't go through the step of killing/replacing the mob.

[ploppyperson]

we have the death animations turned off so it doesn't go through the step of killing/replacing the mob.

Yes it's related to this, seems to be a bug in Paper.