Investigating this further this seems to be a problem with the global application menu. Disabling this by commenting out
export UBUNTU_MENUPROXY="libappmenu.so"
in /etc/X11/Xsession.d/80appmenu and logging out and back in fixes the issue for that session.
Investigating this further this seems to be a problem with the global application menu. Disabling this by commenting out
export UBUNTU_ MENUPROXY= "libappmenu. so"
in /etc/X11/ Xsession. d/80appmenu and logging out and back in fixes the issue for that session.