At times during game play specifically in military areas, the two story barrack buildings such as the ones in NWAF in the southwestern end buildings, either could not be entered as if there is an invisible wall in the doorways. A player can vault in through the front windows but cannot get out. Each of the doors inside the building ground floor and 2nd floor acted the same way and blocked the players movements as if the the doors physical entity did not move with the door texture entity.