I can see on the map that your game has randomized dungoen right? Correct me if I'm wrong. My first dungeon is where i encounter the bug. It was just a traight line with a branch in the mini map (the branch was just 1 room only) and at the end of the straight line, there is a door that isn't like the doors that i see in the map, it is blocked by walls but still have the round indicator showing that it is a door.