Procreate weirdness

Hey! First time this happened: when I try painting this model, those 3 objects can not be painted in 3D mode (they can by showing the 2D texture) and they render differently despite applying the same color (black). I tried remeshing them, deleting and unwrapping again the uvs, but nothing changed. Any ideas? Thanks,


I am very lost here. No matter what I do, cańt make this working. This are basically shapes thát were part of a mirror object and then got validated. I tried both with keeping instances and un-instances. But cańt see any difference. I can paint on the original mesh, but not on the mirrored one.

Ok, sorted. I had to uncheck export normals…