The basement staircase room’s ceiling has an odd glitch with a majority of the available in-game textures. I haven’t tried with any custom textures, but this is what happens:
A couple of the available textures work fine, but a majority of them do this. Most of the ceiling is just a flat colour, while that corner has the texture, but stretched.
Having [0.5.0.X] isn’t the most helpful, as bugs like these get fixed in those smaller versions often. This screencap is 0.5.0.0, as it says in the top left.
Ah, yeah, I realize now that the screenshot is a few days old, but the bug was still present in 0.5.0.1, and I posted as I was updating earlier, and wasn’t sure if the number had changed or not. My bad.