Question More lighting problems... *sigh*

I'm experiencing sooooo many problems with lighting... This one just started happening today.

This is the situation. I have a wall. The wall has a (hidden) panel. Since this panel can open and close, the panel is a Dynamic GameObject on a Static wall. The wall is using a Baked Lit shader, the panel a Simple Lit.

This is what it looks like (the panel is marked by the arrows):



I know it's a bit dark, it's a dark scene. The panel and the wall are lit the same, which is how it should be. But this is what happens if I change the viewing angle just slightly:



It all of a sudden loses all lighting. It does this when I view it from certain positions and in certain angles.

So the question (as with all my other posts here) is: what the heck is going on? the panel is a simple cube with a simpel material applied to it...

 

Sorry for the late reply, but I've been experiencing lighting problems left and right lately...

Unity 2021.3.19f
URP 12.1.10

Haven't tested that yet, will do so today.

 

I think the problem was caused by old occlusion data. After rebaking the occlusion data, the problem disappeared.