Zombie pigmen, wither skeletons, and zoglins try to get out of the lava by jumping over blocks, but they can't because the lava slows them down vertically and causes them to jump too low. This exact problem occurred with zombies in water after the release of 1.13: MC-129601
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This was caused by the fix of MC-13497

Reopened. MC-123699 was updated to only cover mobs without natural fire resistance so it does not cover the mobs described here anymore.
Thanks. 🙂 I hope this gets fixed sometime because I would love to see zombified piglins and wither skeletons crawl out of the lava to get to players.
Can confirm in 20w51a.
Can confirm in 21w05b.

In 22w12a
Thank you for your report!
We're actually already tracking this issue at MC-123699, so we will resolve and link this ticket as a duplicate.
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