Gnome-control-center from proposed updates does not allow to set Shift+Shift for layout switching (https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1245272).
Gnome-control- center from proposed updates does not allow to set Shift+Shift for layout switching (https:/ /bugs.launchpad .net/ubuntu/ +source/ gnome-control- center/ +bug/1245272).