Odoo graphql query returns Null tasks

[gianlucadonato]

Current Behavior

If I execute this query for user 21 and project 35, I correctly receive in the result an empty tasks array as expected (see screenshot)

{
    ProjectProject(domain: [["id", "in", [35]]]) {
      id
      name
      tasks(domain: [["user_ids", "in", [21]], ["stage_id.id", "!=", 32 ]]) {
        id
        child_ids(domain: [["stage_id.id", "!=", 32 ]]) {
          id
        }
      }
    }
}

.

BUT as soon as I add another projectId in the query (39 or any other projectId) then the tasks array for project 35 contains a null item, which is breaking the dapp.

See screenshot example:

Expected Behavoir

Query result should not contains array with null items.