Internal storage problem after IOS15

Hi. I've got a problem after update of IOS15. When I connect my IPHONE 11 to my desktop (Window), I should be able to access to the internal storage and copy the photos to my desktop.

After update of IOS15, the photos in the internal storage has been separated in term of months. It is a good idea. However, I found that not all my photos and movie can be shown in those folders when I can still found them via my iphone photo APP.