Just double click on a window in order to maximize it, then double click again to restore the previous size, the desktop does not refresh correctly, leaving trash in the desktop. http://wstaw.org/m/2012/12/06/kwin.png Reproducible: Sometimes Steps to Reproduce: 1. Maximize a window double-clicking it 2. Restore the window double-clicking it again Actual Results: Many times the desktop does not refresh correctly, leaving trash. Expected Results: Clean refresh Screenshot: http://wstaw.org/m/2012/12/06/kwin.png Using Qt 4.8.4, the nVidia propietary driver 310.19 and kde 4.9.80 (happens also in the beta2).
*** This bug has been marked as a duplicate of bug 310945 ***