Musescore 4.0 won't run on Wayland (Linux)
Reported version
4.x-dev
Type
Functional
Frequency
Once
Severity
S2 - Critical
Reproducibility
Always
Status
active
Regression
Yes
Workaround
No
Project
1) Install Wayland as Flatpak or AppImage
2) Run it using the Wayland backend
Simply put, Musescore 4.0 won't work under Wayland, and that's a major regression from version 3.6
Comments
I ran Musescore 4.0 using the Manjaro's distro package on Manarjo linux, and it runs almost fine under Wayland. The one glitch I encountered was that menus appear in the center of the screen instead of appearing attached to the menu bar. I verified (using xwininfo) that Musescore was not running under XWayland when this occurs. I then worked around this bug by changing my launcher to set WAYLAND_DISPLAY= to force Musescure to use XWayland, which fixed the menu bug.
As the bug reporter noted, when using the AppImage, Musescore picks XWayland by default. I don't know how to force the AppImage to try using Wayland natively.