last reboot the mobs got screwed, igs die 1 by 1 when in lava and other mobs such as cows or blazes die all in 1 hit, also when a stack of too many mobs dies they dont drop any loot.
Thank you for reporting this issue on the forums... however the best place to report these issue is ether in the #issues channel on the community discord or in the forum of a support ticket. You can make a support ticket by clicking the support tab at the top of the forums. I will pass this on to bugs/issues! Thank you!