3.61 - Graphic issue with northern wall and ceiling/floor

[StefanPravda]

Hey guys,

I am playing UW again, and again and again (my Steam version shows only 11 years of playtime, which is probably 1-5% of reality), and I stumped on this graphical bug:
https://prnt.sc/qt0758

Also, it acts like a shutter or something like that, because it seems I can see through it like through a shutter. I deconstructed and rebuilt it, but the issue persists.

Any way I can fix it? That hole shows up on default game with verified files, no mod installed.

Thank you

EDIT: I deconstructed north, north east, east, south east, south walls and built them again and the problem disappeared. A bit time consuming, but things happen.