I've also opened this issue on Shopify Buy github, no response there for days https://github.com/Shopify/js-buy-sdk/issues/926

I keep getting told by Shopify support to "contact the third party theme developer" which is really annoying because I've put in the time to reproduce the issue with Shopify's own code!!!  

Describe the bugShopify Buy One Get One discount breaks cart functionality. The following instructions are based off of this minimum reproducible example which uses Shopify's own code! Here is a Loom video which demonstrates the issue Steps to reprod...

We opened a ticket with Shopify Support 33234945 but I don't think thats going anywhere bc the conversation was super confused with the support rep.  You know the weird thing is, we have another 'dev' site that is set up exactly the same way w/ passw...

We have a headless implementation of Shopify on our site, when a customer checks out from our headless store, we redirect to a url Shopify provides through the shopify-buy sdk. Since last night, Shopify is 302 redirecting back to the root shopify sto...