[BUG] Shipping discount in storefront API

[bitforcesrl]

Describe the bug
I can't recover the shipping discount in storefront API

To Reproduce

• Hydrogen version: 1.6.4
• storefront_api version: unstable

query:

fragment MoneyFragment on MoneyV2 {
  currencyCode
  amount
}

fragment CartFragment on Cart {
  id   
  discountCodes {
    code
    applicable
  }
  discountAllocations {
    ... on CartAutomaticDiscountAllocation {
      title
      __typename
    }
    __typename
    discountedAmount {
      __typename
      amount
      currencyCode
    }
  } 
}

{
  cart(id: "...") {
    ...CartFragment    
  }  
}

If i use a custom code, working:

But with Free Shipping discount the discountAllocations is empty

Without Free shipping code the total is 38.99 (correctly)

And in shopify checkout working: