
In f2bd39b20c89c1896c124f1dccdd587aa544e45c, the expand property for checkboxes was accidentally set to the grandchild (the StBin), instead of the child (the StBoxLayout) of the StButton. Fix that and let the BoxLayout expand instead of the Bin. https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/885