Substance 3D Painter Bypasses Native Window Decorations

When running Substance Painter with the latest Proton 10 base, it uses Wine's frame decoration rather than the native decorations provided by the desktop. This was not present in the prior release.

OS: NixOS 25.11 Desktop: GNOME 49 Substance: 12.1.0

wine-11.10-adobe-linux-x86_64

proton-wine-adobe-linux-x86_64