In case this NOT a behavior you like, you may open start and search for feedback and open Feedback Hub app and share your concern, make sure elaborate like how it used to be and how it has been changed and why you don't like this new improvement.
"why you don't like this new improvement."
It is not an improvement and no one could possibly imagine it was an improvement to dump all the photos unorganised in the picture folder when you could previously save them in date order folders which were automatically created within pictures. Dropping this feature suggests there is no proper oversight of changes being made. That Microsoft removes features with little or no consideration for the end users.