Thanks for the reports! Some of those, like the diagonal doors aren't bugs necessarily. I do agree it looks/feels silly though. Very strange how the stairs generated at a diagonal. That should hypothetically be impossible. Perhaps it was part of another branch of hallways? It's hard to say. I'll look into that regardless.
For the bandit ambush, are you using the mouse or keyboard to make your selection?
Went ahead and fixed most of them, and will upload a patch when I've found out what's causing the ambush glitch. (If I can)