On a Mac it works very well as well. I also use 3dCoat for painting as the Substance software is too expensive. And 3dCoat does everything (apart from not having real layer masks... find that a real handicap).
I also have this issue. Furthermore when I try to install the 3dcpacks again (such as smart materials by MichaelDRS or XMD brushes, 3dCoat 2021 will crash without exception. I am on a MacPro 2013.
This really belongs in the Feature Requests:
But would it be possible to have photoshop black/white masks for paint layers in the Paint room. For more non-destructive painting.
This is exactly what I am looking for and what would speed up my 'workflow' and would make things so much easier...as I would need less applications to work with...