Cannot update controller tags using websocket API

This likely came about when switching to returning tag IDs instead of tag names. The controller update websocket method seems to ignore passing a list of IDs to update tags.

Request:
{
  "type": 0,
  "request_id": 999,
  "method": "controller.update",
  "params": {
    "system_id": "knpge8",
    "tags": [1]
  }
}

Response:
{
  "type": 1,
  "request_id": 999,
  "rtype": 0,
  "result": {
    "system_id": "knpge8",
    "tags": [67, 25],
    ...remaining controller data
  }
}

This seems to only be an issue for controllers - machines and devices work as intended.