Am 20.12.2008 um 14:00 schrieb Peter Dyballa:

Therefore I've seen these white rectangles!

The white rectangles are part of the "sticky" ingredients of an X11 desktop. With blackbox WM I have two X11 desktops. I can change from one to the other and back and the white areas follow. In Quartz after some switches from full-screen X11 to Quartz and back finally this blackbox root menu appeared: You can see that parts of OmniWeb are wiped out. The Blackbox menu is unusable, i.e., I can select what I want and nothing happens – except one thing: I switch from Quartz to X11. This effect is In Quartz restricted to the virtual desktop I launched X11. When I open in X11 the blackbox menus the white blotch is partly rubbed out, i.e. the original X11 background becomes visible. But when I switch to Quartz it's all white again, in both worlds. The switches from Quartz to X11 seem to involve sending some text or control characters. My Emacsen report invalid input (unbound/ undefined key events) like M-å. Could be such controls are also sent to the blackbox WM "dock" that select menus. At least a flashing and an X11 beep are often heard when I switch from Quartz to X11. The generation of this white spot is independent of the way I leave a blackbox menu (clicking into its dock or clicking into the background). In X11 the scaled down Desktop Manager view of its virtual Quartz desktops appears although no Quartz application should sense the mouse cursor. The dock is not triggered to appear. -- Greetings Pete By filing this bug report you have challenged the honor of my family. Prepare to die!