Fix: https://git.reviewboard.kde.org/r/105935/
Did this happen to you? I read the kde blogs too, but it seems a very rare case that this happens. And we wont stabilize 4.9.0, so i would suggest to wait that 4.9.1 hits the tree.
(In reply to comment #1) > Did this happen to you? Yes. https://bugs.kde.org/show_bug.cgi?id=304620 I talked to Thomas Lübking and he said I should chose "stacking order" - which did not work because of bug #432036. The "experience" was quite extreme ;) But - yes - it is a minor issue as there are several things that need to come together. (no windows open or all minimized, shell crashing, alt+tabbing) I just reported these two bugs because of this copmment in the forums: http://forums.gentoo.org/viewtopic-p-7118958.html#7118958 Also it helps when other users hit this problem.
Thanks all. KDE SC 4.9.1 is now in tree. Sync in some hours to get the change. + 04 Sep 2012; Johannes Huber <johu@gentoo.org> +kwin-4.9.1.ebuild: + Version bump KDE SC 4.9.1