The bug
When not aggravated, blazes will sink to the bottom of water or lava instead of floating at the surface like most non-undead mobs. They are still able to fly upwards if hostile.
To reproduce
Spawn a blaze in water or lava while in Creative mode.
Code analysis
This appears to be because blazes don't add a FloatGoal
in net.minecraft.world.entity.monster.Blaze.registerGoals()
, unlike most non-undead mobs.
Linked issues
is duplicated by 3
Attachments
Comments 49

Confirmed.
same applies to water. Blazes in the new snapshots will kill themselves in water because they don't try to get out of it.

This ticket has been marked as a duplicate of MC-49937, in favor of the more general or better information provided.

Reopening this ticket and separating from MC-49937 because the issue is still existing.
Can confirm in 1.18.1.
Can confirm in 1.18.2 and 22w11a.
Can confirm in 1.19.
Can confirm in 1.19.2.

Can confirm in 1.21.4.
I tested this, it's true...