Hi there,

I'm using the WPGraphQL Smart Cache plugin (version 1.2.1) on two independent WordPress sites running on WP v6.4.2 and WP v6.4.3. Since a few days, I'm experiencing the same issue on both sites: In the GraphQL response, the X-Graphql-Keys and X-Graphql-Query-Id headers are both missing, which causes Varnish to not work properly (because it relies on those). Only the X-Graphql-Url response header is still present.
I've tested this also with accessing WP directly without any proxies but got the same response without the headers.

Here's an example query with which I'm experiencing the issue:

query {
  products {
    nodes {
      databaseId
      id
      title
    }
  }
}

Do you have an idea what could cause the issue and how to fix it?