The QGraphicsScene objects of QtTestBrowser should be ref counted.
See the following situation:
1) Open a launcher window in GraphicsView mode.
$ run-launcher --qt -graphicsbased any.foo.com
2) Clone this window
Developer->GraphicsView->Clone Window menu.
Close the first window opened.
Result: the cloned window, that was sharing the same scene as the originating one, goes into troubles.