Rest filter is not working properly

Describe the bug

Query parameters sent by rest:

Parameters received by LoopBack:

{
  "offset": 0,
  "limit": 10,
  "include": [
    "images"
  ],
  "where": {
    "attributes": {
      "or": [
        {
          "and": {
            "[0][key]": "COLECCIÓN",
            "[0][value]": "100% MARVEL",
            "[1][key]": "MATERIA",
            "[1][value]": "MARVEL"
          }
        }
      ]
    }
  }
}

Parameters expected by LoopBack:

{
  "offset": 0,
  "limit": 10,
  "include": [
    "images"
  ],
  "where": {
    "attributes": {
      "or": [
        {
          "and": [
            { "key": "COLECCIÓN", "value": "100% MARVEL" },
            { "key": "MATERIA", "value": "MARVEL" }
          ]
        }
      ]
    }
  }
}

Therefore the functionality described in the documentation does not work.

Logs

No response

Additional information

No response

Reproduction

N/A

Start with the linked LoopBack Where filter documentation and trace how REST query parameters become the shown where.attributes structure. Compare the received object with the expected array form, then verify the documented query against a reproducible REST request. Done means the request produces the expected filter structure and the documented functionality works.