[Bug 76217] can't alt-tab out of new modal dialogs

[Amnon Aaronsohn]

Public bug reported:

Binary package hint: metacity

I'm using metacity version 2.16.3-0ubuntu2. When an application opens a
modal dialog (e.g. "Open File" in firefox), the dialog is shown and
receives the focus as expected. However, when you press alt-tab once to
switch to another open application, nothing happens -- the focus stays
at the dialog. After you "break out" of the window (by pressing alt-tab-
tab or by using the mouse) the application works as usual.

Steps to reproduce:

(1) open firefox and another application (say gnome-terminal).
(2) notice that you can move between the applications by pressing alt-tab
(3) press ctrl-o to open the "open file" dialog in firefox
(4) press alt-tab and notice that the focus stays at the "open file" dialog instead of moving to the terminal.
(5) hold alt and press tab twice to switch to the terminal
(6) return to the still-open dialog and notice that now you can switch to the
terminal by pressing alt-tab.

** Affects: metacity (Ubuntu)
     Importance: Undecided
         Status: Unconfirmed

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can't alt-tab out of new modal dialogs
https://launchpad.net/bugs/76217