Some Materials appear brighter

Hi everybody!

I’ve a strange issue. I can place two identical meshes with the same material aplied in the world next to each other. Some are lighted correctly, some appear yellos/redish and too bright and look very ugly.
It can appear with meshes and geometry actors, too. On both of my ttached images you can see sidealk parts. They are all over the world and look fine, except for some part on the map, some of them look ugly. You’ll see a difference of color, even they are the exact same. As an example you can see the same behavior for the small ticket huts. It happens for a couple of more meshes.

I’ve hidden every single object, light, mesh, etc besides the sidewalk, and it still happens, even when nothing is lit by a light. Of course I’ve tried to edit Lightmap stuff. But as it looks godd sometimes and sometimes not with all kind of meshes, I don’t think it’s about any setting for a particular mesh. Does anybody have an idea how I can fix this?

It happened with older engine versions, too.

Thanks!
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