I am not sure how to call it, it was in the bottom dungeon, cultist looking mob shooting purple things. After I died, I went back took the key killed all the surrounding mobs but instead of a door now there was a cracked wall.
Thanks. We will take a look. The door logic also covers cracked walls that need bombs to open, so the bug may have swapped the state incorrectly. The doors are going to get a major overhaul as the current code has been very problematic for us.