Created attachment 143313 [details]
Screenshots of expected result and observed result. Screen settings screenshot. "inxi -F" output.

Desktop widgets rises up after Plasma startup [Multi-screen]


STEPS TO REPRODUCE
1. Have 2 monitors (right monitor should be higher then a left one in Plasma Display settings).
2. Add some widgets to the bottom of your left screen desktop.
3. Restart your system.
4. Notice thet newly added widgets are higher then they should be.

OBSERVED RESULT
Desktop widgets at the bottom of the left screen doesn't keep their position after startup and moves up a bit.

EXPECTED RESULT
Desktop widgets at the bottom of the left screen keep their position after every system startup.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: openSUSE Tumbleweed 20211105 / KDE Plasma 5.23.2 (Wayland)
KDE Plasma Version: KDE Plasma 5.23.2 (Wayland)
KDE Frameworks Version: 5.87.0
Qt Version: 5.15.2

ADDITIONAL INFORMATION
can be found in attachments