Sometimes Google Chrome leaves something like a "stamp" on the desktop

Hi all.
A strange things start happening with my Chrome (and Chromium). Sometimes an application leaves something like a “stamp” on the desktop (https://ibb.co/1mQwm1c).
It’s half-transparent. After a chrome restart it proceed working without any issues. But the stamp remains until I reboot a laptop.
Plasma restart does not help.
Of course, the issue it not a blocker. But annoying enough.
If someone has an ideas how to fix this or at least restart desktop…
Thank you in advance

kded5 version is 5.86.0
tumbleweed
https://ibb.co/1mQwm1c

the image bb is deleted…

please use suspaste next time instead of all the bloated mess of image hosting websites

Welcome to the forum!

You mention that restarting plasma does not help. Does it persist after plasma upgrade this week? Does logging off and on again helps? Disabling then re-enabling plasma compositor? Switching to tty (ctrl+alt+f1) then back (ctrl+alt+f7)? Disabling then re-enabling plasma compositor? Plasma with Wayland?

Post your graphics stack:

inxi -Gxx