Hi there,
I have all of the most recent versions of GF and the PayPal addon, as well as WP. I've set up a sandbox vendor and buyer and can purchase properly. For fun I entered the vendor account and clicked "issue refund" for a sale, and the entry in the GF form data then reflected a status of Pending (previously Approved) with a -ve dollar amount equal to the sale value in the "Payment Amount" area.
We're looking to hook this into our CRM, but for now it would be cool if this could reflect a status of "Vendor Refunded" or similar.