Comment 3 for bug 1232425

Note that there is an additional upstream issue in that was fixed in gtkmm_3.4 [1] but persists in the gtkmm 2.24 branch. I have asked for the fix to be backported [2].

[1] https://git.gnome.org/browse/gtkmm/commit/gtk/src/papersize.hg?id=0eec6fd533ef14f661fa143a57cf4b01d881be1f
[2] https://bugzilla.gnome.org/show_bug.cgi?id=709149