Public bug reported: KDE bug 275469 ( https://bugs.kde.org/show_bug.cgi?id=275469 ) is caused by Qt bug.
Steps to reproduce bug: 1) Close all applications and open Firefox (or any other app). 2) Close Firefox by clicking on the window manager close button (X), but make sure your mouse doesn't move at all in the process. Firefox should close cleanly without any ghost entries. 3) Now, start Firefox again. 4) Close Firefox using the same button, but try to move the mouse very quickly to and from the button while pressing it. On my system, I get a ghost entry almost every time I do this. There are few patches in KDE bug report which are fixing the bug. Please patch Qt for precise to workaround this annoying bug. Thank you. ** Affects: ubuntu Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/911733 Title: Patch Qt to fix annoying KDE bug 275469 (ghost taskbar entries) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/911733/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs