Created attachment 142597 [details]
Offending area highlighted.

SUMMARY
Under Wayland, if System Tray is present and any application is present in the System Tray upon login, in the top left corner of the screen there'll be a small, invisible area in the shape of a square that if clicked on, will trigger an application found in System Tray. Your cursor might change when you hover over the offending area. It happens regardless of the panel's size, height, and edge. Clicking several things in the System Tray, or closing all applications in the System Tray makes it stop.

STEPS TO REPRODUCE
1. Prerequisites: Have System Tray but avoid having it near our area of interest, which is the top left corner of the screen. Ensure that you have a startup application that hides in the tray.
2. Log to a Wayland session without touching the System Tray.
3. Do a single click in the top left corner. If nothing happens, try adjusting the pointer to in all directions slightly while continuously clicking.

OBSERVED RESULT
An application will trigger as if it was clicked over on the actual system tray's location.

EXPECTED RESULT
There shouldn't be any clickable area in the top left corner of the screen with this widget under Wayland.

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: Garuda Linux
(available in About System)
KDE Plasma Version: 5.23.0
KDE Frameworks Version: 5.87.0
Qt Version: 5.15.2

ADDITIONAL INFORMATION
Applications that I have on Autostart are Caprine, Discord, MEGAsync, Flameshot, Latte, Yakuake, Signal, Steam and Xtreme Download Manager. In the attached screenshot I tried to highlight the offending area.