[Bug 316364] [NEW] Unable to unmaximize window when running on dual monitors

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When starting Thunderbird(*), it first of all opens on the "wrong"
monitor (i.e. not the same as last time) (**), but the big problem is
that is is maximized in a very strange way.

It is impossible to unmaximize it (as there is no titlebar I have to use
the right click menu in the "bottom of window bar" (whatever that is
called)).  It is also impossible to move with <Alt>-mouse, and thirdly
it always places itself as the second window in <alt>-tab (which means
that it is the first window to be switched to no matter where it
*should* be on the window stack).  The screen also blinks madly when
holding <Alt>-tab with the Thunderbird icon as selected.

I'm running Ubuntu 8.10, with a standard gnome setup.  Some of my config
files might be from the last version since I did an rsync of my home
directory.  Let me know what config files you might need and I will
attach them.

btw.  This problem only occurs when running dual monitor (I have one
1600x1024 (external), and one 1024x768 (laptop)).  The erroneous window
gets stuck on the laptop monitor, and I have all the menu stuff on the
external monitor.  The laptop is logically placed on top of the external
(because of limitations in the graphics card on my laptop).

The problem seems to occur whenever I start Thunderbird when it has had
an unmaximized size that is bigger than the small monitor resolution.

(*) This is probably not a Thunderbird bug, since it has happened at
least once with Firefox.  It's only Thunderbird which has this behavior
almost every time though.

(**) This is bug https://bugs.launchpad.net/bugs/224845, but my report
is only related.  It starts with the same behavior but this report is
about a different problem.

** Affects: mozilla-thunderbird (Ubuntu)
     Importance: Undecided
         Status: New

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Unable to unmaximize window when running on dual monitors
https://bugs.launchpad.net/bugs/316364
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