Plasma 6 - strange behaviour in Applicationstarter

[Hans <hans.ullrich@mail.de>]

Hi folks, 

after an upgrade to trixie with plasma6, I am struggeling with a strange 
issue. Plasma6 is running X11, not Wayland.

The problem is, when clicking on the Application starter (the little "K"-Icon 
in the taskbar), then it pops up and shows the categories, but when I hover to 
the applications, the second menu disappears.

I also discovered, when I stay with the mouse over a category, the curser is 
blinking.

Did one of you got saw the same behaviour, too?

I disconnected the mouse and its dongle, but got no success. As it is a laptop 
(dell Latitude), of course the touchpad might interfere. 

The touchpad is ok, tested with several livesystems. 

I do not believe, it is a hardware problem, more a problem with the software.

On my desktop computer (same plasma version and trixie), it is working well.

Any ideas??? Or is this maybe a bug?

Thanks for reading and your help.

Best

Hans