KDE Task manager widget does no remove all closed windows

Solution Verified - Updated -

Environment

  • Red Hat Enterprise Linux (RHEL) 6
  • KDE Desktop Environment 4.3

Issue

  • Our users are suffering from the bug as described in bugzilla 1027703, is there an indication for the release of an officially supported fix?
  • When a window/application is closed on the KDE desktop will not be removed from the KDE task manager widget.
  • Clicking on them does not raise the window/application that they represented, nor does right clicking and
    selecting "close" get rid of them.
  • The only way to get rid of them is to remove the task manager widget and re-add it. At which point only current
    windows/applications appear.

Resolution

  • Please apply errata RHBA-2015-1180 to upgrade the kdebase-workspace package to 4.3.4-30.el6_6 or later

Root Cause

  • When "Only show tasks from the current desktop" is enabled, tasks closed on a different desktop than where they are opened remain visible in the KDE task manager widget

Diagnostic Steps

  • Steps to reproduce this issue
    • Open the "Task Manager Settings"
    • Enable "Only show tasks from the current desktop"
    • Open a new application (i.e. Konsole)
    • Right click the title bar and set "To Desktop" -> "All Desktops"
    • Switch to a different desktop
    • Close the application by clicking the "Close" (X) button in the title bar
    • Switch back to the previous desktop and notice a "ghost" entry in the Task Manager

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