I had to deactivade the additional animation addons from the compiz- plugins-extra package because it caused unity to crash and after doing so the strange window restoration is gone. So maybe the bug is related to this package (but I'm wondering because for mini/maximize I set "Zoom" which is from the not from that package).
-- You received this bug notification because you are a member of compiz packagers, which is subscribed to compiz in Ubuntu. https://bugs.launchpad.net/bugs/875709 Title: Compiz scale option corrupts minimized windows To manage notifications about this bug go to: https://bugs.launchpad.net/compiz-core/+bug/875709/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~compiz Post to : [email protected] Unsubscribe : https://launchpad.net/~compiz More help : https://help.launchpad.net/ListHelp

