Created attachment 181686 [details]
Screen recording where I try to use the pager

SUMMARY

With my specific setup, where I have 10 Virtual Desktops, 5 rows of 2 desktops each, I cannot click on the top and bottom rows of the Pager widget from the Panel in order to switch VDs. Clicking on the central ones does work.

Tested on an Arch Linux install on an AMD iGPU as well as on an OpenSUSE Tumbleweed install with a Intel iGPU setup.

STEPS TO REPRODUCE
1. Set at least 5 full rows of Virtual Desktops or more.
2. Add a Pager widget to your Panel.
3. Try to click on any VDs of the top and bottom rows of the Pager. It should not work
4. Try to click on any of the central VDs. It should switch properly.

OBSERVED RESULT

Clicking on the central rows switches the desktop. Clicking on the top and bottom ones does not.

EXPECTED RESULT

Clicking on the top and bottom desktops on the Pager should switch to them.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma:  Arch Linux, also tested on OpenSUSE Tumbleweed
KDE Plasma Version: Plasma 6, plasmashell 6.3.5
KDE Frameworks Version: 6.3.5
Qt Version: 6.9.0

ADDITIONAL INFORMATION

As mentioned, I've tested it only on Wayland, on two different setups with different GPUs and both work the same.