BeagleBone Black opencv windowing problem

Using GTK with minimal “Hello World Sample Window” I have the very same problem:

  • messing up the Gnome desktop
  • alldesktop Windows loosing ther borders
  • unmoveable window appears in upper left Corner

Seems to be some problem with Gnome und GTK (some kind of version mismatch?)
I’m using the latest Angstrom build 2013-06-20 with GTK and GCC.

Any help, any ideas would be wellcomed…