Comment 173 for bug 729979

@Felipe

I watched your video, no sure which DE you are using, but I have never had the black window problem if I use the mouse to choose application from the launcher. The bug is triggered only when I use the alt-tab launcher to choose among applications that are already in use, and with raring it only happens when more than one instances of the same applications are in use. e.g If Firefox (one instance), vlc (one instance) and two instances of evenice (2 pdf documents) are in use and all minimized. Using the alt-tab launcher to choose either Firefox or Vlc doesn't result in black windows, but focusing on either instance of evince will.

I have replaced the default window decorator with emerald but it doesn't make a difference.

The only thing that works for me is to disable "animation" from ccsm, but that result in abrupt motion when opening closing maximizing and minimizing windows.