Comment 3 for bug 197820

I see this issue too - crack attack's game window gets no window decorations with Compiz enabled on Intel GMA X3100, though the initial game settings windows does. Same goes for mplayer's video window if using the -vo gl or -vo gl2 output drivers.

Note, the widgets in the window border are there, and responsive - they're just invisible.

Seems to be something to do with OpenGL interacting with Compiz, but not all OpenGL apps are affected; glxgears gets proper decoration.

Also, if you drag a window containing OpenGL graphics around the screen while it's running, it leaves "trails" behind - screenshot attached. This goes for glxgears as well as the apps whose window decorations don't render properly.

Screenshot attached, showing the Experience Ubuntu video in mplayer's -vo gl mode, having been dragged around the screen then paused. And crack attack's game window. Both with no visible decoration. The shell window is, as you can see, decorated correctly.