I have a material that is meant to be rendered using Default Lit. It has just Base Color, Metallic, Specular, Roughness and Normal maps.
I was messing about and switched it to Subsurface, which made the material mesh preview in the editor go mostly black. However, when I switched back to Default Lit, this effect has remained. It is annoying because it is also visible when the material is used on models in a preview window (such as an animation blueprint).
The effect is not visible in-game, so it is specific to preview windows.
I tried using just a Base Color and saving, as well as deleting my AppData DerivedDataCache folder and the folders Intermediate, Binaries and Saved (except Config) in the project folder. This caused the shaders to recompile, but the effect is still visible. If I switch the preview window to Unlit, the material appears as it should. However, it should still appear without this black effect for Lit.
Does anyone know how I could possibly correct this?