Some mobs do not pathfind to water when set on fire by fire aspect
Here is a list (more mobs to come when I have time to test more)RabbitSheepCow
Zombie Villagers - Has to be at night
Wolves - Must not be around Llamas or skeletons in testing
Ravenger
Axolotls
Iron Golem - Must not be any enemies around
Evoker - Must not be any villagers or other targets around
Pillager - Must not be any villagers or other targets around
Endermite
SilverfishChicken
Piglin - Has to be in the overworldLlamas
Villagers - Even run away from water
Cats
Turtles
Donkeys
Hoglin - Has to be in the overworld
Pandas
Vindicators
Axolotls
Skeletons - Has to be at night
Creepers
Zombies - Has to be at night
More to come shortly!
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Why you cross out llama's. I put a 10X10X10 pool. And filled with water and grew kelp so it so it is filled. I am boulding my Mansion. An i spawned a llama and hit with a fire aspect sword and it ran around aimlessly even though water was 5 blocks away. It never got in it went within one block but never extinguished itself.

In my testing the Llama walked into the water
It is okay for you to not put in if you want i can delete my comments so others cant see and you can take llamas out of Bug report. If you take out llamas or uncross them i will take comment out. it is useless to have them in there if it didn't work for you. It is your post your stuff.
Yes my chickens ran towards the water too.
An vindacator named johnny_ to
A sheep named Jeb_
A Cow villager zombie and skeleton and ravenger named dinnerbone to
Does the video work?

Sort of
What do you mean sort of.
If it doesnt i can delete

@unknown this isn't a discussion forum. For discussion go to the subreddit
ok
Isn't this when being on fire in general, not specifically fire aspect?

For some of the mobs on this list (like skeletons) they are set to pathfind to water, except if they are set on fire by fire aspect (that's the bug)
You put "Piglin" on twice ("Piglin", "Piglins - Has to be in the overworld")
Can confirm in 21w03a.
Don't add the version if you haven't tested it in that version yet

I have just tested it in 21w05a

Duplicates MC-115396
Just tested llama