I'm very sorry if there is a thread about this already, I couldn't find one.

So my problem is: when I set the reveal fog of war distance to it's maximum, it starts revealing through walls. Not only through small spaces between walls but literally through a solid wall.
FoW Through Wall.jpg
In this screenshot I put up a couple rectangles. The knight is set to reveal the maximum distance of fog of war, the height is way below the wall's height, and the visualize fow radius option is on. On the bottom wall it clearly only blocks a tiny bit of the reveal, but then reveals through the one solid wall. It seems like up to a specific radius revealing gets blocked like it should, but above that it just ignores obstacles.
It was the same for anyone else in the server.
Is this a bug or is there a way to fix this?