The issue is also present in debian 12 fvwm3 package as well, icons are disappearing when switching fullscreen mode/restart fvwm.
As a workaround I used this Shift+Super+R keybinding:
Key R A S4 Recapture
Then icons are appearing again.
The issue is also present in debian 12 fvwm3 package as well, icons are disappearing when switching fullscreen mode/restart fvwm.
As a workaround I used this Shift+Super+R keybinding:
Key R A S4 Recapture
Then icons are appearing again.