Hello! After upgrade to Plasma 6.2, I found that panel applets stopped to dodge the panel as they should. See below screenshot for clipboard applet as an example. All other applets, including application launcher and calendar, got the same issue. I am using a floating panel but turning the panel non-floating do not help.
BTW Is there a way to stop floating panels to dodge maximized window?
TL;DR Panel tooltips/dialogs now depend on the blur/contrast mask to appear on the correct position, turning off those (the aforementioned plugins do) will “remove” that mask causing the problem I see in your screenshot.