color bug (all black) [mapper]

Oooluu

I have a problem when changing the color of an object, it doesn't happen with everyone.

But particularly with some if I try to change the color, the object just turns completely black. Even if you have only selected a single part to change the color, it will turn black in its entirety

I'm currently using Texture Studio, but it seems like a general problem

Any solution?

example

Example: 14485

exampl