How to create a window with a Kirigami application for a plasmoid?

Development
1

So have this plasmoid. If placed on the desktop it allows controlling a mpd music server and shows a cover picture. You can also click on the title text and it pops up a window giving quick access to the playing queue, picking songs, albums or playlists.

In the plasma 6.6 beta I’m running into this issue now: https://bugs.kde.org/show_bug.cgi?id=515757

The app window is created here: [1]. If I put a Kirigami application in the app window [2] (for page stack, passive notifications, …) it leads to the behavior in the bug report.

I thought I figured out a solution, but didn’t. Any suggestions how to proceed?

2

Looking further into it I wanted to figure out what in Kirigami.ApplicationItem actually broke the behavior.

With kirigami 6.22 installed I grabbed the necessary files [1] from that tag on invent and imported them locally. And with the local files everything works. Switching back the Arch system package: broken.

Then I checked on KDE-Linux (2026-02-13) and there it works with the system packages. So I assume it will fix itself on Arch too. :person_shrugging:

As a bonus point I also discovered this similar looking issue on the way (freshly created user; also only Arch, fine on KDE-Linux). Same error message as in the bug above.

2026-02-13 12:51 UTC

  • [1] ApplicationItem.qml PageRowGlobalToolBarStyleGroup.qml PageRowGlobalToolBarUI.qml PageRow.qml
3

Qt 6.11 issue which is shipping together with the plasma 6.6 beta on Arch. Dev on matrix confirmed it should be fixed with:

:clap: