Created attachment 172648 [details] A video showcasing the bug. Pay close attention to the taskbar of the left monitor. The applications are being launched on the main monitor (right). SUMMARY When there are multiple taskbars across two or more screens, the option 'Show only tasks: From current screen' will not behave correctly. It will briefly show the application from a different screen before disappearing. STEPS TO REPRODUCE 1. Create a new default panel on a second monitor. 2. Right click on the task manager 3. Select Configure Icons-only Task Manager / Configure Icons-and-Text Task Manager (depending on the style, bug is visible on both) 4. Select behaviour. 5. Enable 'Show only tasks: From current screen'. OBSERVED RESULT The second taskbar is showing an application from the main taskbar for a brief second before disappearing. EXPECTED RESULT The second taskbar should not show anything when 'Show only tasks: From current screen' is enabled and the application is launched on the main taskbar. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Arch Linux KDE Plasma Version: 6.1.4 KDE Frameworks Version: 6.4.0 Qt Version: 6.7.2 ADDITIONAL INFORMATION This was tested on a Wayland session. The problem also occurs on openSUSE Tumbleweed.
I can reproduce this reliably on 6.1.4 using the given steps KDE Frameworks Version: 6.5.0 Qt Version: 6.7.2 Unfortunately, I can't try to reproduce on master right now. Clicking Configure for either task manager results in SIGSEGV (unrelated to this bug)