PayPal Express Checkout Windows Closes Immediately if Only Shipping Fields are Filled Out.
When PayPal is selected as a payment option, the billing window closes leaving only the shipping information to be filled out. After filling out the shipping fields and pressing the continue button the PayPal window will open, but will immediately close. But, if the billing information and shipping information is filled in the form before choosing PayPal, then the PayPal payment window will stay open allowing the user to complete the transaction. However, none of the information the user had filled out in the previous forms transfers to the PayPal forms and needs to be filled out again.