Beginning with latest beta, large slimes stopped taking damage from cactus under certain circumstances.

Steps to reproduce:

1. Create two-high cactus barrier with blocks in ceiling as shown in attached Screenshot (120).png 
2. Spawn slimes on one side of barrier and place "bait" (player in survival mode or iron golem) on other side as in attached Screenshot (121).png.
3. Observe behavior of slimes, then break blocks hanging from ceiling between the cacti as a follow-up test as in Screenshot (122).png

Observed Results:

1. Slimes attempt to go through barrier to attack player or iron golem, but only small and medium slimes are damaged when they touch the cactus. Large slimes bump against the cactus repeatedly without damage.
2. When follow-up test is performed, large slime still can't pass through the barrier, but takes damage from cactus.

Expected Results: 

Either all slimes should take damage from any cactus they touch, or slimes shouldn't try to pass through areas where they won't fit.