incorrect call to gtk_widget_unparent on GtkNotebook
Submitted by Domenico Ferrari
Link to original bug (#727591)
Description
Hi. If a project contains a GtkNotebook, when closing Glade, this message occurs: Gtk-CRITICAL **: gtk_widget_unparent: assertion `GTK_IS_WIDGET (widget)' failed
It is repeated for every direct child of the notebook (page labels and contents).