[plasmashell] [Bug 524428] New: Switching between desktop and folder view and then back requires a plasmashell restart and misplaces other containments' panels

https://bugs.kde.org/show_bug.cgi?id=524428

            Bug ID: 524428
           Summary: Switching between desktop and folder view and then
                    back requires a plasmashell restart and misplaces
                    other containments' panels
    Classification: Plasma
           Product: plasmashell
      Version First 6.7.80
       Reported In:
          Platform: KDE Linux
                OS: Linux
            Status: REPORTED
          Keywords: regression
          Severity: normal
          Priority: NOR
         Component: Containment
          Assignee: [email protected]
          Reporter: [email protected]
                CC: [email protected]
  Target Milestone: 1.0

This is a somewhat complex bug, but very disruptive when it happens and you
haven't yet figured out what's going on or how to recover.


STEPS TO REPRODUCE
1. Have two screens
2. Put any kind of panel on the primary screen, and a different panel (again,
any kind) on the secondary screen
3. Unplug the secondary screen
4. Right-click the desktop of the remaining screen > Desktop & Wallpaper
5. Switch to Desktop view > click OK
6. Right-click the desktop again > Desktop & Wallpaper
7. Switch to folder view > click OK
8. FIRST BUG: Desktop is still in desktop view
9. Restart plasmashell with `systemctl restart --user
plasma-plasmashell.service`
10. SECOND BUG: Desktop is in folder view now, but the other screen's
containment's panel is now on this screen's containment

With these steps, the issue is 100% reproducible for me.


ADDITIONAL INFORMATION
To recover, I have to use the "Manage Desktops & Panels" window to move the
secondary panel back to the disabled screen's containment.

This appears to be a regression in git master; it did not happen a few months
ago.


SOFTWARE/OS VERSIONS
Operating System: KDE Linux 2026-08-13
KDE Plasma Version: 6.7.80
KDE Frameworks Version: 6.30.0
Qt Version: 6.11.1
Kernel Version: 7.1.8-arch1-3 (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 7840U w/ Radeon™ 780M Graphics
Memory: 17 GB of RAM (16.0 GB usable)
Graphics Processor: AMD Radeon 780M Graphics

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