SUMMARY
Panel menus, (e.g. kickoff menu, extended systray, notifications list, updater applet) closes as soon as they lose focus. This works fine when using "Click for focus", but if you use "Focus follows mouse", this means the menus are closed just by moving the mouse pointer outside them. They should only close when clicking outside them (similar to how hovering over a window moves the focus to it, but you have to click it to move it to the foreground).

Operating System: openSUSE Tumbleweed 20201221
KDE Plasma Version: 5.20.4
KDE Frameworks Version: 5.77.0
Qt Version: 5.15.2
Kernel Version: 5.9.14-1-default
OS Type: 64-bit
Processors: 8 × Intel® Core™ i7-4790K CPU @ 4.00GHz
Memory: 31.3 Gibyte of RAM
Graphics Processor: GeForce RTX 2080 Ti/PCIe/SSE2