The game crashes when entities die while having the oozing effect

Can confirm, for some reason it's generating two crash reports at once. It also appears that after the crash the world will be some kind of corrupted (entering the world again will result in the same crash).

Cannot confirm, nothing seems to happen. Do you have any data packs/mods enabled? If so, please make sure to disable them.

Update: I can confirm now:

Confirm, what a serious bug.

There's no resource packs needed however, I did believe possible unstable when trying /kill commands for player

Not only players, I am gave the oozing effect to a zombie, when I killed the zombie, the game also crashed.

The game will crash again if you enter the crashed world.

Very serious bug.

Can confirm, seems very serious as I'm now stuck out of my world for doing an ominous trial.

Downgrading an affected world to 24w19b seems to fix the crash. It even fixes the world, so it can be opened in 24w20a again. Though I'm not sure whether there are any lasting side effects of this bug or the downgrade.

I was able to finish my ominous trial this way.