Comment # 52 on bug 61182 from Alex Deucher

(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.