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Description
Steps to reproduce:
- Launch ginguma.
- Press Ctrl-Q. Nothing happens.
- Show and hide the main menu with the leftmost top button.
- Press Ctrl-Q. Now the Quit dialog shows up.
I checked that the Gtk.AccelGroup is created and added to the main Gtk.Window even before displaying the menu. Anyone with a better knowledge of GTK+3 and Python is more than welcome!