Note attributes placed on cart not being added to the order created webhook

Our app is placing note attributes hidden ones using __ on carts. This has worked well but recently we’ve been seen many times for customers where this isn’t working all the time. In the last 1 month is when this seems to have changed. Right now we see some come in with it and some without. The response from the cart/update.js call shows the call was a success. This call to add the notes is when our script loads. Is anyone else seeing behavior like this or have any suggestions?

It seems buy now vs add to cart and checkout have the different behavior. We can see the cart token changes in the buy now case. Anyone know if this is expected?

Yup this is a known bug and I confirmed it with Shopify staff:

The problem is the Buy It Now (aka accelerated checkout) doesn’t include the cart attributes.

I haven’t found a workaround, and it’s definitely a bug in the Shopify itself.