Hi Mathias,
use latest Beta...
When I open in MC a picture folder - ex. M:\Bilder\Kontakte\HQ\ - and open a picture with new Windows App Photos (Fotos 2022.31100.24013.0) I cannot scroll to next picture with mouse wheel.
See pic: MC open a picture - no scrolling.png
If I do the same via Windows Explorer I CAN scroll to next picture.
See pic: Explorer open a picture - scrolling.png
Also I see the filmstrip (next pictures in the folder) - which is not available when I do the same process in MC