Hy,
I struggle with the problem of a spotlight which is visible on the baked lightmap but not on the texture in shaded mode. Has anyone a tip for me what this could cause? I have around 150 Spotlights in the scene but only on this wall, the light is not visible. I change already the texture but nothing change.The reflection probe area ends behind the wall.
Here the pictures of it
Hy,
After 5 hours of trying and searching, I found the problem ! for this geometry, the checkbox “contribute GI” was off
Maybe this helps other beginners like me 
As a tip! The View “Contributors / Receivers” shows the problem directly.