Substance Painter black line in material everytime I create a brush layer or mask layer.

[Jean-Félix23755904q7i6]

I am new to Substance Painter, I suddenly have this problem where every time that I create a paint layer, the default material has a thick black line in it. This is only happening in this specific project but when I switch file it's fine. Have I enabled an option that I don't know about ?

[GeoffroySC]

Hi,

Are you talking about the sphere preview? Maybe you rotated the light by clicking and dragging in the small window?