My task bar is set to always be on screen. Mozilla's mail window defaults to maximized when I open it. If I open it using any of the available methods from a browser window (status bar icon, menu item, etc), the window sizes correctly, just like any maximized window, with the task bar still visible. However, if I open Mail by double-clicking on the "mail alert" icon that appears in the system tray when I have new mail, the window is created too large. It fills the entire screen exactly, covering the task bar. The over-size window has some strange behavior. The "maximize" button is disabled. If you double-click on the bar at the top of the window, it will reduce down to a more reasonable size: roughly 25 pixels from the left, right, and top edges of the screen, and roughly 25 pixels from the top of the task bar. Once you have reduced the size this way, the "maximize" button is still disabled. Double-clicking again on the bar at the top of the window does nothing. This is in the 1.1a release (build ID 2002061104), and I believe it was in the 1.0 release too.

This is affecting me in 1.4a (build 2003040105), on Windows XP pro, with the exact same symptoms.

See in particular the first comment in that bug. Matt: if you agree this is a dupe, please mark this bug Verified. *** This bug has been marked as a duplicate of 137661 ***