SUMMARY Right click window decoration or titlebar, select submenus, menu windows flickert STEPS TO REPRODUCE 1. Right click window decoration or titlebar 2. Hover over submenus, especially where it has submenu like Destops or more actions 3. Hover inside 2nd menu flicker both menu windows OBSERVED RESULT Decoration submenus flickert EXPECTED RESULT No flickert SOFTWARE/OS VERSIONS Windows: macOS: (available in the Info Center app, or by running `kinfo` in a terminal window) Linux/KDE Plasma: KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION
You may want to check if any recently installed effect may cause this e.g. "Morphing Popups" as in https://bugs.kde.org/show_bug.cgi?id=504811 *** This bug has been marked as a duplicate of bug 504811 ***