Occlusion shadows don't get calculated when walls are destroyed.

[Krzysztof Dycha]

This is the result of the tension room/pit/whatever explosion. Some walls were removed. Shadows were not re-calculated in the walls that were adjacent to the removed walls.

‌

[Jochen Terstiege]

Yes, I’ve seen this happen. Had no time to debug this yet, there are more important things on the list.

[Jochen Terstiege]

Fixed