[CRASH] Creature did not disappear from adventure after it was defeated

How does the problem look like?

So I took a fight with a pack of Medusa Queens, defeated them and the battle was over.

Only that the creature was still there but it was a FEW in numbers. Should ve vanished for good.

NEVERMIND, the game actually crashed. Not sure what happened.

What exactly did you do to trigger it?

[Write here]

On which map it happened?

Island of Fire

A screenshot or video would be fantastic.