Since 20.03 upgrade, unfortunately, many programs using the GTK+ file dialog crash when trying to open/save a file, with the error-message:
GLib-GIO-ERROR **: 01:23:45.678: Settings schema 'org.gtk.Settings.FileChooser' does not contain a key named 'show-type-column' Trace/breakpoint trap (core dumped)
This affects e.g.: Evince, Atril, Firefox, Chromium, LibreOffice, …
(Gimp, Inkscape, Viewnior seem to be unaffected.)
Is there any way to solve this? (Or would I have to downgrade to 19.09 again?)
And is this a bug in every affected program, or one generic Nix(OS)-bug?