Storefront API bug when changing line item variant

[vc-ca]

We’re experiencing a similar cart API bug but it’s affecting ALL cart
items. When we add 4 items via cartLinesAdd, the mutation
returns all 4 items correctly. But when we query the same cart, it only
returns 1 item. This happens on regular products without any discounts.

Cart IDs experiencing this: gid://shopify/Cart/hWN1gPfWjo9w284Q5RN4LlgX.

I created a separate ticket for this related bug here:

Storefront API cart query returns wrong number of items after mutation

Bug Description Cart mutations return correct data, but cart queries return wrong data. Items disappear from cart on page refresh. Steps to Reproduce Add 4 items to cart using cartLinesAdd mutation Mutation response shows all 4 items ✓ Query same cart using cart query Query returns only 1 item (wrong) ✗ Example Cart ID: gid://shopify/Cart/hWN1gPfWjo9w284Q5RN4LlgX Mutation Response: 4 items [Lemon Balm, Chili Pequin, Cenizo, American Beauty] Query Response: 1 item [American Beauty only] …