Why is there is a horizontal area where all objects are black (unlit)

I have a strange problem. I have a very simple scene with an orthographic camera and a single spotlight (or I changed the lighting to different things to try to solve this, but nothing works).
On about 1/3 from the top of the screen objects go black. It’s easiest to see because on both sides 5 buttons are spawned in vertical rows, and on both sides the second buttons are totally black, or sometimes (depending on the lighting that i pick) darker than the rest. Also when other objects come to rest at that height, they go totally black.
There is absolutely nothing in the scene that is anywhere near that area, it’s a very simple scene, I can NOT find out what could be causing this strange behavior.
ANY idea what could be causing this? screenshot on request…

Thanks!

Hi BramV,

Any additional details can try to help us craft a repro case. I mess around with orthographic views with various lighting fairly often and have never seen an issue like you are describing but it could easily have to do with your usage case.

-Where is your camera view bug happening? Editor view? PIE only?
-What type of lighting setup are you using? Are the meshes directly lit?
-Can you reproduce the problem if you move to a new testlevel with a dynamic sunlight?

A screenshot with light and actor properties could help.