>>106407073
The only way to get "server-side decorations" on GNOME is to compile the program with libdecor, which injects CSD into the program's windows. Either that app is compiled with it, or the distro patches it in. Both ways are retarded, every other OS and compositor supports both CSD and SSD except GNOME.
Here is the Wayland protocol for server-side decorations, and here is GNOME being the only one other than Weston and Gamescope to not support it:
https://wayland.app/protocols/xdg-decoration-unstable-v1