SUMMARY
Default panel with taskbar and clock freezes visually at some point during operation.
The panel can still be interacted with but it won't update any information, the time on the digital clock remains as it was when it stopped working, and taskbar icons that would update some information (such as the new email counter within the kmail icon) will not update.


STEPS TO REPRODUCE
1.  Boot and login normally.
2. Use the system normally and at some point some panel will stop responding, normally the main display one, but not exclusively.

OBSERVED RESULT
Panel stops visually updating, and becomes "frozen", but interaction is still possible, so I'd call it "functional".

EXPECTED RESULT
Panel doesn't freeze visually at all.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 5.27.4
KDE Frameworks Version: 5.105.0
Qt Version: 5.15.9
Kernel Version: 6.2.13-zen-1-zen (64-bit)
Graphics Platform: Wayland
Processors: 12 × Intel® Core™ i7-8700K CPU @ 3.70GHz
Memory: 15.6 GiB of RAM
Graphics Processor: NVIDIA GeForce GTX 1070/PCIe/SSE2

ADDITIONAL INFORMATION
It can be brought back to a working state by right clicking the panel, entering edit mode and changing some visual aspect of it, such as the height.

It does not happen on all panels simultaneously, it seems to affect a single display, though not necessarily the same one every time.

It may have happened around the time I opened a game running with Proton, but unsure at this point.

Even more strange, during the "frozen" period, if one clicks on the pinned taskbar icon for "System Settings" it opens some windows that existed at some point on a different activity. 
Even stranger is the fact that this activity no longer exists as I deleted it from the activities menu, but during this issue, clicking on this icon brings back the apps that I had open back then, which were a browser and a konsole window.
This strange behavior ceases when the workaround of changing the panels height is applied.