PayPal “Buy now” purchase possible without choosing variation

Invoice ID 55964

hey there,

first of all thanks for this great plugin.
Unfortunately there seems to be a incompatibility issue with the pay now function of paypal. We are offering a product bundle from two variable products. Custumers must choose size and color for each product in the bundle. Before choosing the options the bundle cannot be put into the basket (which is correct).
But with the paypal pay now button (which is integrated in the single product page) it is possible to buy the bundle without choosing any options.
is there a solution that i did not find?

Best regards
yuk