Inconsistent query result

Users Dgraph
7

Schema

connection: uid .
name: string .

type Node {
    name
    connection
}

Set data

{
  set {
    _:node1 <name> "node_1" .
    _:node1 <dgraph.type> "Node" .
    _:node2 <name> "node_2" .
    _:node2 <dgraph.type> "Node" .
    _:node3 <name> "node_3" .
    _:node3 <dgraph.type> "Node" .
  }
}

Set initial connection

{
  set {
    <0x1> <connection> <0x2> .
  }
}

Replace connection

{
  set {
    <0x1> <connection> <0x3> .
  }
}

Replace connection a second time

{
  set {
    <0x1> <connection> <0x2> .
  }
}

Using this query

{
  q(func: type(Node)) {
    uid
    name
    connection {
      uid     
    }
  }
}

I get an array for the connection of node with uid 0x1

  "data": {
    "q": [
      {
        "uid": "0x1",
        "name": "node_1",
        "connection": {
          "uid": [
            "0x2",
            "0x3"
          ]
        }
      },
      {
        "uid": "0x2",
        "name": "node_2"
      },
      {
        "uid": "0x3",
        "name": "node_3"
      }
    ]
  },

But with this query

{
  q(func: type(Node)) {
    uid
    name
    connection {
      name
      uid     
    }
  }
}

I get the correct result

  "data": {
    "q": [
      {
        "uid": "0x1",
        "name": "node_1",
        "connection": {
          "name": "node_3",
          "uid": "0x3"
        }
      },
      {
        "uid": "0x2",
        "name": "node_2"
      },
      {
        "uid": "0x3",
        "name": "node_3"
      }
    ]
  },

I can reproduce it this way most of the time. If the connection array does not appear, try the mutations which change the connection again.
I tested with dgraph v24.1.2, v24.1.0 (which both have this problem) and dgraph v24.0.5 (which does not have this problem).