Graphql type with id property that can have different values for same id

Question

I was wondering if an object type that has an id property has to have the same content given the same id. At the moment the same id can have different content.

The following query:

const query = gql`
  query products(
    $priceSelector: PriceSelectorInput!
  ) {
    productProjectionSearch(
      priceSelector: $priceSelector
    ) {
      total
      results {
        masterVariant {
          # If you do the following it will work
          # anythingButId: id
          id
          scopedPrice {
            country
          }
        }
      }
    }
  }
`;

If the PriceSelectorInput is {currency: "USD", country: "US"} then the result is:

{
  "productProjectionSearch": {
    "total": 2702,
    "results": [
      {
        "name": "Sweater Pinko white",
        "masterVariant": {
          "id": 1,
          "scopedPrice": {
            "country": "US",
            "__typename": "ScopedPrice"
          },
          "__typename": "ProductSearchVariant"
        },
        "__typename": "ProductProjection"
      }
    ],
    "__typename": "ProductProjectionSearchResult"
  }
}

If the PriceSelectorInput is {currency: "EUR", country: "DE"} then the result is:

{
  "productProjectionSearch": {
    "total": 2702,
    "results": [
      {
        "name": "Sweater Pinko white",
        "masterVariant": {
          "id": 1,
          "scopedPrice": {
            "country": "DE",
            "__typename": "ScopedPrice"
          },
          "__typename": "ProductSearchVariant"
        },
        "__typename": "ProductProjection"
      }
    ],
    "__typename": "ProductProjectionSearchResult"
  }
}

My question is that masterVariant of type ProductSearchVariant has id of 1 in both cases but different values for scopedPrice. This breaks apollo cache defaultDataIdFromObject function as demonstrated in this repo. My question is; is this a bug in apollo or would this be a violation of a graphql standard in the type definition of ProductSearchVariant?