https://bugs.freedesktop.org/show_bug.cgi?id=61182
--- Comment #52 from Alex Deucher agd5f@yahoo.com --- (In reply to comment #51)
This bug is not fixed, still happens with kwin-4.10.4 and mesa-9.1.4 https://bugs.kde.org/show_bug.cgi?id=322773 https://bugs.gentoo.org/show_bug.cgi?id=476606
I think you are hitting a different issue. Please open a new bug.