I believe it happens when stacking gets broken in compiz (bug 845719) but have no way to confirm it for sure. One other thing is that when it happens alt-tab doesn't display its switcher either but it does switch the windows. I can access launchbar by pressing super key or by moving the cursor to the left side bit it is invisible. On the attached movie you can sometimes see artifacts of it but on a display I just don't see it showing up at all. This resembles a little Bug #820152 and is one of the most annoying things about unity at this point. It is pretty easy for me to reproduce. I just open several different windows including few maximized firefox'es then I close some of them and sooner or later it happens.
** Attachment added: "Bug preview" https://bugs.launchpad.net/ubuntu/+source/unity/+bug/847024/+attachment/2435755/+files/out.ogv ** Changed in: unity (Ubuntu) Status: Incomplete => Confirmed ** Changed in: unity Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/847024 Title: Launcher sometimes doesn't display when a maximised window is focused To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/847024/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
