Function keys binding doesn't work for gromit-mpx
on a fresh install of xubuntu 20.04, which comes with xfce4.14. encountered this issue with gromit-mpx related to hotkey grab: https://github.com/bk138/gromit-mpx/issues/77 that appears to be xfce-only. they are punting to xfce.
previously was on xubuntu 18.04, which was on xfce 4.12, and no such problem.