Light passing through gameobject

Hello, I am having an issue with some light passing through an edge of a 3d Model. I uploaded an image of one of the models. It's simply a cube with two loop cuts and two extrusions. It's happening with a few other objects I have and I am not sure why.

Edit: It does't pass through the opposite side by the way.



I was having the same problem. I saw a post that said you can get rid of it by adjusting the directional lights bias. I couldnt find the post and I haven't tried it. Post back if it works.

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Setting the normal bias to 0 worked. Thanks.