Tile a window by dragging it to a screen edge (especially bottom one). Click the unmaximize button on the tile bar. The window size is restored correctly but the position is as it was just before tiling has happened, rather than before dragging was started. This is not what the user would expect (ending up with a window mostly off-screen).
This doesn't happen when the window is tiled using a keyboard shortcut.
I ran into a similar issue.
Maximizing a tiled window gives unexpected results. The window is not maximized and gets part stuck under the panel. This behaviour is application independent. I observed it with Firefox, Thunar, Transmission, etc.
I got this confirmed by several people in the xubuntu irc channels under 12.10 and 12.04.
I attached two screenshots to illustrate.
Steps to repeat:
1) tile window in upper half of the screen
2) click (+) or double click window title to maximize
Created attachment 4918
Tiled firefox window in upper half of the screen before maximize
Created attachment 4919
Tiled firefox window in upper half of the screen after maximize
Window not maximized and part stuck under panel.
This bug is a duplicate of this one : #10084.
There is a proposed patch for this.
Consequently marking as duplicate.
*** This bug has been marked as a duplicate of bug 10084 ***