Comment 9 for bug 635258

The bug appears to have been introduced by:
http://git.compiz.org/compiz/core/commit/?h=compiz-0.8&id=6d4833f0e3217c63f516acbdc90796b4d78eecfb

The bug is fixed either by reverting that commit or changing the added lines to:
w->width = attr.width + (attr.border_width * 2);
w->height = attr.height + (attr.border_width * 2);

I'm currently unable to get to http://bugs.opencompositing.org/ so I have not filed an upstream bug report.