Yesterday I was playing on .27, and my fallen carnage wouldn’t go through the tedious midnight feast kill/heal animation if the skill it used killed all the opponents. I am currently using .30 and this is back. I thought it was an amazing quality of life improvement not to have to sit through superfluous kill-effect animations if the skill used killed all opponents. I guess I need more information if what was happening in .27 was the bug, or if what is happening in .30 is the bug.
Edit: also if a spell is multicast, and the monsters die before all spells are cast, it will continue to cast (in .30). It did not do this in .27.