Public bug reported:
Unity on 14.04 does not restore modal dialogs correctly after switching
to desktop view (Ctrl+Super+D), when the user tries to restore a single
application and therefore clicks on the application icon, while in
desktop view mode. Then only the main window is restored, which (of
course) does not react to any mouse or keyboard events, and (at least)
confuses users.
However, if _NET_WM_STATE_SKIP_TASKBAR is not set on the modal dialog,
then a second click on the application icon does restore the modal
dialog, but if the dialog has _NET_WM_STATE_SKIP_TASKBAR set, it becomes
impossible to restore the modal dialog (it is neither shown in spread
view, nor in the context menu of the application icon or when using the
application switcher using Alt-Tab). The modal dialog also does not get
restored if the user presses Ctrl+Super+D to exit the desktop view, and
the dialog has _NET_WM_STATE_SKIP_TASKBAR set.
So the user has no "normal" method interact or even to close the
application, which then needs to be killed (if the user even knows how
to do that), or the user has to log out, with both scenarios possibly
leading to loss of unsaved data.
Even worse, some applications (i.e. LibreOffice) don't close when a
modal dialog is opened and the user tries to log out, so the session
does not close and often the only option for a user is to power off the
system hard.
Example for an application with modal dialog with _NET_WM_STATE_SKIP_TASKBAR
not set: nautilus and the about dialog
Example for an application with modal dialog with
_NET_WM_STATE_SKIP_TASKBAR set: Java Control Panel (ControlPanel binary)
and the about dialog (button on the first tab)
** Affects: unity (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1584885
Title:
Unity (14.04) does not restore modal dialogs correctly after
initiating desktop view
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