https://bugs.kde.org/show_bug.cgi?id=317238 https://bugs.kde.org/show_bug.cgi?id=315064 Possible fix: https://git.reviewboard.kde.org/r/108947/ I had ugly, fully opaque, aliased boxes without shadow. The patch from the review fixed the issues (applied clean on kwin-4.10.1)
This one got committed. http://quickgit.kde.org/?p=kde-workspace.git&a=commit&h=ffb21254acd4bd529d14c1ec40a7fab65bb84e62 Could we get that backported to 4.10.1/4.10.2? The diff applies fine on 4.10.1 (so it should on 4.10.2 - not tested). kwin compiles and runs fine.
Thanks for reporting. The fixed upstream version is available in tree. + 06 May 2013; Johannes Huber (johu) +kwin-4.10.3.ebuild: + Version bump KDE SC 4.10.3