IN the info tab, it says it can be use a prop_static, but it’s not appearing in game. I check for leaks, and there doesn’t seem to be any. I’d use a prop_physics, but nav mesh doesn’t seem to work with those. It’s a L4D2 Map.
From what I hear L4D2 SDK is still buggy, and that problem happened to me when the prop or part of it was out of the map, like in the void.
What else does it say it can be. It’s a bug in hammer. Use the other one it can be.
That’s just a leak.
You could just make it prop_physics, disable motion in the Flags tab and manually work the nav mesh around it.