WooCommerce Bookings

What I expected

To add GF Add-ons on a bookable product

What happened instead

The price of extra options added through Gravity Forms does not affect the price of the booking on the product page:

Screenshot: http://cld.wthms.co/JdeBno

Once I add the product to cart, the “total total” gets calculated correctly:

Screenshot: http://cld.wthms.co/xkFuWP

Steps to reproduce the issue

1. Create any bookable product (costs can be set globally or on person / resource level)
2. Create a Gravity Form with Product + Total fields, and extra paid options (as described here: https://woocommerce.com/document/woocommerce-gravity-forms-product-addons/#section-3 )
3. Attach the form on the product
4. Open the product page, select a few paid options and observe the product price
5. Add the product to cart and observe the price again.