Bug 492766

SUMMARY
Dragging icons in the Icon Only Task Manager widget causes unexpected behavior in KDE Plasma Activities.

STEPS TO REPRODUCE
Open KDE Plasma desktop environment.
Add the "Icon Only Task Manager" widget to the panel if it is not already present.
Create multiple activities and switch between them.
Attempt to drag and rearrange icons within the "Icon Only Task Manager" widget.
OBSERVED RESULT
Icons move incorrectly or not as intended.
The task manager might display incorrect or misplaced icons after dragging.
The system logs contain errors related to drag operations and encoding variants.
EXPECTED RESULT
Icons should be draggable and rearrangeable within the "Icon Only Task Manager" widget without display issues or errors in the system logs.
The task manager should correctly reflect the order of tasks based on drag-and-drop operations.
SOFTWARE/OS VERSIONS
Operating System: openSUSE Tumbleweed 20240902
KDE Plasma Version: 6.1.4
KDE Frameworks Version: 6.5.0
Qt Version: 6.7.2
Kernel Version: 6.10.7-1-default (64-bit)
Graphics Platform: Wayland
Graphics Processor: AMD Radeon Vega 6 Graphics
Memory: 9.7 GiB of RAM
Processors: 4 × AMD Ryzen 3 3300U with Radeon Vega Mobile Gfx
ADDITIONAL INFORMATION
System Logs: Errors observed include:
PlasmaQuick::AppletPopup failures
eglSwapBuffers errors
Issues with QML encoding variants, such as QMetaType()