The bug
Endermen no longer take any damage when a splash water bottle is thrown at them.
Code analysis
For 1.15-pre2
Splash water bottles deal IndirectEntityDamageSource
(Mojang name), however when endermen are damaged by this damage source they simply try to teleport and don't take any damage.
Linked issues
is duplicated by 1
Attachments
Comments 16
Duplicates MC-106812.
Snow golems is MC-106968.
Reopened, as MC-106812 is only about potions that behave like water bottles. It even states that (lingering) water bottles are fixed.
This issue also happens in 1.14.4. I've attached a video demonstrating the issue.
This also affects snow golems.