SUMMARY The popup shadow is displayed incorrectly, see screenshot KDE Plasma Version: master KDE Frameworks Version: master Qt Version: 5.15.3 ADDITIONAL INFORMATION I've seen this both on Manjaro with Intel GPU and NEon Unstable in Virtualbox. Mostly on Wayland, but I'm not sure whether on X11 too
oh well, the screenshot I had is gone and now I can' reproduce of course
Created attachment 134976 [details] Screenshot
Never seen it on X11 FWIW.
Looks like a duplicate of bug 429057 .
*** This bug has been marked as a duplicate of bug 429057 ***
*** This bug has been marked as a duplicate of bug 439408 ***