Visportal showing portalsky

[Springheel]

I got a report of a visportal in my update to Awaiting the Storm that is acting weird. It's a simple visportal inside a door, but when you open the door, the visportal shows portal sky. It looks like you're looking through the door into sky. When you walk through the portal you can see the room normally, but when you look behind you, you can only see sky. It's almost like it's staying closed even though the door is open.

 

There's nothing unusual about the visportal that I can see, and I've already tried remaking it without success. Any idea of what would cause this?

[Springheel]

Remade it a few more times, without success. There are no unusual spawnargs on the door either. Using r_showportals shows that the engine thinks it is open (green) when you're inside the room, though the entire portal is black. From the other side, r_showportals shows nothing.

 

What concerns me is that I don't think I did anything to this area when I was updating the map.

 

edit: good news...it has the same problem in 1.08.

[grayman]

When this happens, it's usually the alignment of a portal with another nearby portal. Neighboring portals in the same plane can sometimes cause one of the portals to never open.

 

My only suggestion is to move the door portal around so it's not in the same plane as a neighbor.

[Obsttorte]

I had the same problem in Builder Roads, but grayman's suggestion solved it for me.