I'm using couple of areaportalwindows in my map (don't ask). func_areaportalwindow func_brush From one side of the door, it works as intended. But from the other side, it doesn't display the func_brush. Here are three images showing what happens. I am stumped atm, any ideas what I may be doing wrong? There are no hint/skip, visclusters, or anything else that might be causing a problem. There is, however, a trigger_multiple but I removed it and I still continue to have this issue.