Here’s what I did to check for the aforementioned erronious behavior.
I deactivted ALL plugins except for the s2pro plugin.
I then generated a new pro form shortcode. Accept set to paypal,visa,mastercard
Saved the page and took a look at it.
Fillied in some bogus info and select Paypal as payment method.
Still the billing address data appears…
Something is not OK…
I then removed the CC’s in the accept completely so only PayPal was accepted as way to pay. Saved the page and looked at it. Then also the billing address data appears.
What struck me also is that in a past version of the pro form when selecting PayPal the button at the end changed into the well-known PayPal alike button. That is not happening now.
Not really a problem, just noticed that one.