Bug 515407

Summary: Icons-Only Task Manager doesn't show open windows
Product: [Plasma] plasmashell Reporter: Tom <412wtom>
Component: Task Manager and Icons-Only Task Manager widgetsAssignee: Plasma Bugs List <plasma-bugs-null>
Status: RESOLVED DOWNSTREAM    
Severity: normal CC: qydwhotmail
Priority: NOR    
Version First Reported In: 6.3.6   
Target Milestone: 1.0   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: My current settings, and the fact that despite having a settings window, alacritty, and floorp open (among many other applications), the task manager only shows icons as if none are open.

Description Tom 2026-02-02 00:08:35 UTC
Created attachment 189149 [details]
My current settings, and the fact that despite having a settings window, alacritty, and floorp open (among many other applications), the task manager only shows icons as if none are open.

Running 6.3.6, as it is packaged with NixOS stable.

Expected: The icons-only task manager and the icons-and-text task manager should show open tasks as described in its settings. Clicking on an icon with an open task should expand or minimize that task when the settings are met, such as in any case when all checkboxes for "Show only tasks" are unchecked.

Actual: At some point the icons-only task manager stopped showing any open windows. It only shows pinned applications, and clicking any will open a new instance no matter how many are open already, which screen they are on, etc. This issue is also present with the icons-and-text task manager when I load it. Interestingly, if I hover over Floorp, it does show the media bar for a paused YouTube video, despite not actually showing a preview for the window that YouTube video is on.

What I've tried: 
- Changing the widget's configuration, including changing any of the "Show only tasks" options.
- Removing the widget and re-adding it.
- Reloading the plasma shell via methods such as  `plasmashell --replace && systemctl --user restart plasma-plasmashell`
Comment 1 Bug Janitor Service 2026-02-02 00:33:40 UTC
Thank you for the bug report!

However Plasma 6.3.6 no longer receives updates or maintenance from KDE; active versions are 6.4 or newer. Please upgrade to an active version as soon as your distribution makes it available to you. Plasma is a fast-moving project, and bugs in one version are often fixed in the next one.

If you need help with Plasma 6.3.6, please contact your distribution, who bears the responsibility of providing help for older releases that are no longer receiving updates from KDE.

If you can reproduce the issue after upgrading to an active version, feel free to re-open this bug report.