Le 31/03/2021 à 17:37, Jean-Pierre Chrétien a écrit : >> Could you try some other Qt applications in wayland mode to see >> whether the problem is wayland configuration in debian or LyX itself? > > I do not see any difference with VLC of FileZilla, seems to be LyX-related. > i see there are other wayland plugins, should I test them ? Sure, why not. JMarc