I accepted one quest and declined another. I then exited the town and saved the game. I reentered the town and started the previously accepted quest. I traveled to the destination (mausoleum) and got a text about a strong ghoul eating a body with lesser ghouls surrounding it. I clicked “Engage”. The battle loaded for a short while, then the game crashed.
With 300+ hours in the game, I doubt I can reproduce this bug as I’ve never seen it before.