startScanning callback never called (startScanningAsync never resolves nor rejects)

I'm using noble on KDE Neon Linux machine and a raspberry PI.
The same code that works flawlessly on Raspberry does not work on the PC.

It's not a permission thing, cause I set it as described and it does not work via sudo anyway. `poweredOn` state is correctly detected.

Only scanning does completely nothing.

Any tips, where to look for a solution/workaround?