I'm filing this under plasma-shell rather than klipper because if only affects klipper in Plasm-next. Apologies if this is wrong. There is a black frame around the klipper menu, see screenshot Reproducible: Always
Created attachment 85929 [details] Screenshot of the issue
Marco, could you clarify what Klipper needs to do to avoid this issue?
Bug in Qt, for details see https://git.reviewboard.kde.org/r/117684/