Yes, I confirm the issue. By chance, it's just been fixed yesterday with revision 23287
http://svn.xfce.org/diff.php?repname=xfce4&path=%2Fxfwm4%2Ftrunk%2Fsrc%2Fcompositor.c&rev=0&sc=0 -- black active window when returning from screensaver https://launchpad.net/bugs/64115 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
