Note that we can't just stop returning closed windows from the window mediator, because some consumers (e.g. session restore) rely on seeing closed windows in the list so they can remove them from their internal data structures expeditiouly.
Note that we can't just stop returning closed windows from the window mediator, because some consumers (e.g. session restore) rely on seeing closed windows in the list so they can remove them from their internal data structures expeditiouly.