Followup-For: Bug #882512 Hi again, I've now switched to kwin-x11 4:5.8.7-1~deb9u1 (that should match your PU request #874747), let's see if this improves things. Are there other packages you would recommend to upgrade in my case, too? Since all these PU requests seem to be rebuilds of packages that previously were in sid, a suffix of '~deb9u1' instead of '+deb9u1' seems to be the more correct solution. Andreas