Shaded view - shading doesnt appear on objects with material other than default

Hello, I have a problem with showing shadows in my model. In shaded view, if i choose “use rendering material”, it appears that only objects with default materials are shaded and other ones appears as they are without any kind of shading.

In a screenshot it is visible, as the white building is more like shades of grey, but concretish things are just the same no matter where the faces are facing. Same for the grass

Any sugestions please?

Hi - can you post a simple file that shows that behavior?

Here it goes, thank you for checking

janself_shading test.3dm (490.5 KB)