Bug in Act 5 Chapter 3 where opened paths become inaccessible
This happened in quest 3 (Dire Warning) -- I've fully explored it, and was running through it again for kicks (I was curious if the map would reset after I completed it again, and it did with some new drops). I went down and straight through to the boss.
When I entered it again, the paths requiring keys are all blocked. Screenshot available on request.
I tried another map at random (quest 4, Foul Conclusion) and the gates hadn't reverted to being blocked there; I haven't run through it to see if it changes on completion.
Anyway, I'll wait to see if it resets. It's minor -- I don't need to run this quest anymore -- but does look like a bug of some sort.