Github GraphQL Explorer - `orderBy` not working as expected

The orderBy argument sorts the returned list neither in ascending nor descending order

Query

{
  user(login: "sauravhiremath") {
    topRepositories(orderBy: {field: STARGAZERS, direction: DESC}, first: 5) {
      nodes {
        nameWithOwner
        stargazers {
          totalCount
        }
      }
    }
  }
}

Response

{
  "data": {
    "user": {
      "topRepositories": {
        "nodes": [
          {
            "nameWithOwner": "sauravhiremath/fifa",
            "stargazers": {
              "totalCount": 3
            }
          },
          {
            "nameWithOwner": "bundly/dash",
            "stargazers": {
              "totalCount": 5
            }
          },
          {
            "nameWithOwner": "sauravhiremath/fifa-api",
            "stargazers": {
              "totalCount": 17
            }
          },
          {
            "nameWithOwner": "sauravhiremath/skeduler",
            "stargazers": {
              "totalCount": 0
            }
          },
          {
            "nameWithOwner": "bundly/dash-beta",
            "stargazers": {
              "totalCount": 4
            }
          }
        ]
      }
    }
  }
}