SUMMARY
***
When I click on Kicker, it pops up the application groups (as expected). At this stage, if I click on any place outside Kicker, it disappears (again as expected). If I pause my mouse pointer on any one of the groups, it opens the list of installed applications (as expected) and at this stage, if I quickly move my pointer and click on any place outside Kicker, it disappears (again as expected).
But if I open the list of installed applications, point my pointer on any one of the installed applications but do not click on it (or do not move my pointer over and out of the list of applications quick enough) and then move the pointer away from Kicker and click on any place outside, the Kicker menu stays put and does not disappear. It stays put wherever or on whichever window I click on. If I bring the pointer back to Kicker on a different application group then the list of installed applications disappears and reveals a new list of installed applications. If at this stage I quickly move my pointer and click on any place outside Kicker then the list of applications disappear but Kicker itself stays put and does not disappear until I click on the Kicker icon on the panel. 

The observed behaviour happens only for Kicker but not for Kickoff. Also, the problem happens in Wayland session but not in x11.
***


STEPS TO REPRODUCE
1. Click on Kicker and open the menu.
2. Move pointer to any program group and open the list of (installed) programs. 
3. Hover on the entry for any application for a second but DO NOT click on it.
4. Click anywhere outside the menu say on another windows or the desktop.
OBSERVED RESULT
Kicker menu stays put and does not disappear.

EXPECTED RESULT
Kicker should disappear.

SOFTWARE/OS VERSIONS
Windows: NA
macOS: NA
Linux/KDE Plasma: Arch Linux Kernel: 5.16-arch-2 (64-bit)
(available in About System)
KDE Plasma Version: 5.24.2
KDE Frameworks Version: 5.91.0
Qt Version: 5.15.2

ADDITIONAL INFORMATION
Graphics Platform: Wayland
NB: The problem happens in Wayland session but not in x11.