I don't know the name of the map since i only have 20 hours in the game so far, but I got stuck in the bus on B site for firefight. I was in between the seats on the side of the bus on the side of the large building overlooking B site. Somewhere near the middle. I couldn't move in any direction and i could only look in about 180 degrees. Tried crouching / proning / jumping and couldn't get out. I can provide more details but i couldn't find the map online in the wiki or anything.