Aborted staged remains active in the process engine

After aborting a stage in a case management workflow, the customer wants to retrieve all active stages [1] and the aborted one looks as an active in the response.
 

[1]
>> GET /server/containers/{containerId}/cases/instances/{caseId}/stages

{
  "stages": [
    {
      "stage-name": "Stage1",
      "stage-id": "_15692AAE-2330-40D6-916E-39B0FB140BFD",
      "stage-status": "Active",
      "adhoc-fragments": [
       

{           "name": "Task1",           "type": "HumanTaskNode"         }

      ],
      "active-nodes": []
    }
  ]
}
 
Customer used this endpoint [2] first, to abort a stage:
 

[2]
>> DELETE /server/admin/containers/{containerId}/processes/instances/{processInstanceId}/nodeinstances/{nodeInstanceId}