linuxmint/gtk — pull request #7 by mtwebster (2014-08-24 18:10:59+00:00)
Title: Don't implement popup_menu in GtkWindow

This leads to disastruous results, since each menu is itself
in a GtkWindow, so holding down the menu key leads to a neverending
cascade of menus on top of menus.

https://bugzilla.gnome.org/show_bug.cgi?id=722106