gnome calendar problems
Problem: "gnome-control-center" empty
Solution:
$ env XDG_CURRENT_DESKTOP=GNOME gnome-control-center
Problem: gnome calendar google shared calendars missing
Solution: Enable sync in https://calendar.google.com/calendar/syncselect
Problem: Nextcloud/ownCloud account setup window misses buttons
Solution:
$ export GTK_CSD="1" $ env XDG_CURRENT_DESKTOP=GNOME gnome-control-center
