[Wayland-bugs] [Bug 784319] Sometimes tooltip_popup_timeout() in gtk/gtktooltip.c causes crash after closing a window

[gtk+ (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=784319

--- Comment #17 from Takuro Ashie <ashie at clear-code.com> ---
When the widget doesn't have its own GdkWindow (by not calling
gtk_widget_set_has_window), a GdkWindow is created & destroyed by GtkWidget
class:

https://git.gnome.org/browse/gtk+/tree/gtk/gtkwidget.c#n10594

But when the child class doesn't chain up the unrealize func, the above code
doesn't called so the window isn't destroyed.

I think it's firefox's fault.
I'll close this bug after I confirm it on my environment.

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