d734b117e0
We may end up with window-added emitted multiple times on the same window, which results on: 1) Extra clones being created, all taking the same size and stacking. 2) JS exceptions because handle each clone actor being destroyed one by one, but all clones already have a NULL source when the first destroy handler is called, so we step on null objects inside _computeBoundingBox(). Keep accounting of those windows in order to avoid multiple additions, which fixes both issues.
GNOME Shell
GNOME Shell provides core user interface functions for the GNOME 3 desktop, like switching to windows and launching applications. GNOME Shell takes advantage of the capabilities of modern graphics hardware and introduces innovative user interface concepts to provide a visually attractive and easy to use experience.
For more information about GNOME Shell, including instructions on how to build GNOME Shell from source and how to get involved with the project, see the [project wiki][wiki]
Bugs should be reported to the GNOME bug tracking system.
License
GNOME Shell is distributed under the terms of the GNU General Public License, version 2 or later. See the COPYING file for details.