I know they now shut down Picasa as in favor for the new Google Photos. I never used Picasa, but now uploaded a few pictures lately to Google Photos.
But indeed when I visit https://picasaweb.google.com/home all the pictures from Google Photos show up there as well.
Is that a normal behaviour? And more more point: Even though I only have very few albums created in Google Photos, in Picasa I see quite a lot of albums, named by dates. So for every date for which there are photos uploaded, one album is created in Picasa. Seems weird to me.