I don’t know what kind of program it is, but if it works on X11, you could try forcing it to run inside Xwayland by unsetting the WAYLAND_DISPLAY variable. I’ve had to do this with Qt Creator because dockable windows didn’t work at the time on Wayland.
Slic3r doesn’t work on it.
No idea of why. (But I suspect it’s about the several monitors thing.) Will probably try again in a year or 5.
I don’t know what kind of program it is, but if it works on X11, you could try forcing it to run inside Xwayland by unsetting the
WAYLAND_DISPLAYvariable. I’ve had to do this with Qt Creator because dockable windows didn’t work at the time on Wayland.env --unset=WAYLAND_DISPLAY DISPLAY=:0 /path/to/prog