MarmalooThere is a bug in window room, if you open the right shutter, a hitbox appears in the middle of window room.
This isn't a bug with the map so much as a design flaw with TF2. This happens in a couple of Valve maps too. The most egregious example is in the first forward spawn for Blu on Upward, if the shutter door is open then you can't move or shoot through the hallway above the spawn whatsoever. No model appears but it causes an invisible wall. This is because the doors don't disappear, their hitbox simply moves up and out of the way, rather than turning into the ceiling like their actual model does.