Why light is going through close meshes?

Question

Hello, I didn't work with lights previously and I'm trying to figure out what this even could be.
First I had a problem when I put a OmniLight too close to a wall, it shines through a mesh which stands in the middle.

I found a workaround - scale everything up, because I make models like realsize. But it seems like a bad solution, I'm trying to figure out what the problem is.

The second problem I have is similar, but may have a different reason.

Here the OmniLight goes through mesh again, but in a different way. I checked the mesh for holes, because it looks like there may be a hole at the center of the cable. There was a hole, initially, but then I filled it in Blender and replaced the obj file and recreated the MeshInstance to make sure the model got refreshed.

But the problem remained. I guess I'm missing something?
I forgot to mention, I tried all the settings of OmniLight node, none solved what I'm showing.

Comments

I'm also experiencing these issues. Enabling shadows made things better, but that's if you want shadows

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This is with shadows already ¯_(ツ)_/¯
There are shadows of monitor and other stuff except hole in the middle.

Answer 1

So, after a week of distress I decided to try and recreate this in a new scene, because sometimes it helps to figure out what was wrong. I couldn't recreate it! Everything was fine!

So it seems I messed something up with this scene. Maybe the scale was too low or test meshes was bad. Anyway the problem was local and seem to be solved with a new scene.