how to mirror a mesh with correct light?

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:bust_in_silhouette: Asked By 2plus2makes5

I want to mirror a 3d character to get the same effect as mirroring a 2d character, but if i scale horizontally the meshinstance or one of its parents the lights and shadows on it are also mirrored, like if the lights were “applied” on the mesh before mirroring.
Any solution?

:bust_in_silhouette: Reply From: 2plus2makes5

I knew the cause should have been something stupid!
For some reason the material of the mesh had no culling and that was the cause of the issue, once i put back culling the issue was resolved!