We’ve noticed an issue within the cart. When using cross sells if I add a product in the cart it will reload the cart with the url /basket/?add-to-cart=22593 – This will of added the product to the basket BUT because of the URL if I then decide I want to change the quantity of the cross sell product it will add an additional so say I added 1 more the quantity would be 2, it would then refresh and will have added 2 more products bringing the quantity to 3.
We’ve changed back to TwentyFifteen where it works fine.
The other option we tried was editing the theme so when we add a cross sell product it would be added using AJAX the only issue with this is it does not refresh the page. Any Idea on what we can do to resolve this issue?