Atlassian Autocomplete URLs do not work + Create Issue Meta Incompleteness

Jira Development Jira Cloud
1

I hit the jira create issue meta endpoint and received this field in the response

{
      "required": false,
      "schema": {
        "type": "array",
        "items": "string",
        "system": "labels"
      },
      "name": "Labels",
      "key": "labels",
      "autoCompleteUrl": "https://api.atlassian.com/ex/jira/.../rest/api/1.0/labels/suggest?query=",
      "hasDefaultValue": false,
      "operations": [
        "add",
        "set",
        "remove"
      ],
      "fieldId": "labels"
    },

when I attempt to GET the autocomplete URL using the same credentials I used to get the create issue meta, I get a 401 saying that I am missing scopes.

  1. Is this a known issue?
  2. Do I need to just ignore this autocomplete URL and instead reconstruct it via the v3 autocomplete endpoint? (src)
  3. Not all custom fields/options available for a project are being included for a project I am working on. Does the create issue meta endpoint only return the standard jira fields that all projects get?