Editing /usr/share/glib-2.0/schemas/30_ubuntu-mate.gschema.override works. You have to recompile schemas after editing: sudo glib-compile-schemas /usr/share/glib-2.0/schemas/.
Editing /usr/share/ glib-2. 0/schemas/ 30_ubuntu- mate.gschema. override works. schemas /usr/share/ glib-2. 0/schemas/ .
You have to recompile schemas after editing: sudo glib-compile-