As shown in the figure below, we will organize the properties according to the product options selected by the customer and put them into the form dom of the buy now button.
But today we found out that the buy now button doesn’t bring this data into the checkout, everything was fine before today.
We have just seen the same issue as well. Was there a botched update today that is causing this problem or will we be unable to get line items into buy now button (which I don’t understand why that would be the case).
Many of us are facing this issue as you can see ( https://community.shopify.com/post/1646158 ). This will maybe make the shopify support team take into consideration this bug and look into it.
On my side I will disable the buy now button for now to save time and energy until things get clear.