Although you have enclosed the light indirect light from the light source seems to seep through especially on the ceiling and the floor.
Unity light passing through walls.
In that case you ll need to be a bit more clever.
Set the point light s baking property to mixed or baked then bake your lighting data using the lighting tab.
You have a point light source behind some walls.
How to fix indirect lights seeping through walls.
Create a unity primitive cube plane etc sized similarly to your wall remove its collider and in the mesh.
By sydon thursday november 2 2017.
Shadows are the obvious answer however i assume you are using lite and that s not an option.
You can simulate this in shaders or use raycasts to see if the light is behind a wall.
This is a quick fix for the light bleed that i was having a while ago.
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This solution works in other engines like unity and ue4.
It s really just a shadow type setting that needs to be set right.
This solution works in other engines like unity and ue4.
Light passing through walls 1.