Hi There,
With the new advance settings, there’s two option for background. Upper layer is just on top of the lower layer background. With that settings of yours, that means the image you have added on the lower layer will have parallax effect. Since you don’t add anything on Background Upper Layer, that will work like the previous section with just 1 image parallax background. The latest update just add an option for another layer of background. If you don’t enable it, it’s the same functions as before. If that settings is not working as expected, please do share URL where you implement that so we can check your setup. Thank you.