Incorrect type deduction with interfaces

[prokop7]

Component(s)

router

Component version

v0.0.0-20240819092109-3eea9d8f5836

wgc version

0.58.7

controlplane version

4c8154f4ad9d98bd67a4aee1c8615acdb97de3e165cdac5a346ce7dcb484b9e4

router version

v0.0.0-20240819092109-3eea9d8f5836

What happened?

With given schema

type Query {
  objects: Object
}
interface Object {
  id: Int!
}

type Car implements Object {
  id: Int!
  content: CarContent!
}

type CarContent {
  name: String!
}

type Bike implements Object {
  id: Int!
  content: BikeContent!
}

type BikeContent {
  name: String!
}

the following query will fail with this exception differing types 'BikeContent!' and 'CarContent!' for objectName 'content'

query {
  objects {
    id
    ... on Car {
      id
      content {
        name
      }
    }
    ... on Bike {
      id
      content {
        name
      }
    }
  }
}

---

It is expected that this query will either execute smoothly or fail during the composition phase.
On Apollo side this runs without exceptions

Environment information

Environment

K8S cluster
golang:1.22.2 + distroless/static

Router configuration

No response

Router execution config

No response

Log output

No response

Additional context

No response

[github-actions]

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[StarpTech]

Hi @prokop7, thanks for the report! We will take a look and come back to you.