I am using a mesh to render terrain in a top down 2D game. I am adding details over the terrain using sprites. So my base terrain is a mesh renderer, and the detail tiles use sprite renderers.

When I place lights over the area, they render with different lighting. The mesh renderer appears darker, so you see a clear line between details and terrain. If you look at the top left of this image, you can see the roads are much darker in the middle, and the details on the side are lit up. Each house has a point light over it.

I also have each renderer’s settings in the album.

Fixed this by editing the lights, and marking Render Mode: Important. I was on Auto before.