Bug 450056

SUMMARY
***
If I change the settings folder desktop in a new activity, the icons disappear.
When I restart the icons appears again but they lost the order.
If I open the new actiivty, I lose the icons again.
***


STEPS TO REPRODUCE
1. I have a normal default desktop with icons and widgets.
2. I add a new activity.
3. In the desktop settings of the new activity, I change the folder by default to the files of the new activity.
4. I go back the first activity. And the icons are disappear.
5. The icons are in the ~/Desktop anyway.
6. I do log out and log in. The icons are back, but they have lost order and are in a single line.
7. I change to the new activity, I go back to the first activity and the icon gone again... and back to point 6.

OBSERVED RESULT
Always happen.

EXPECTED RESULT
Keep the icons of each activity correctly

SOFTWARE/OS VERSIONS
Operating System: KDE neon 5.24
KDE Plasma Version: 5.24.0
KDE Frameworks Version: 5.90.0
Qt Version: 5.15.3
Kernel Version: 5.13.0-28-generic (64-bit)
Graphics Platform: X11
Processors: 12 × Intel® Core™ i7-10750H CPU @ 2.60GHz
Memory: 15.5 GiB of RAM
Graphics Processor: NVIDIA GeForce GTX 1650/PCIe/SSE2

ADDITIONAL INFORMATION