Can't reference parent through child

Here's a simplified version of my code. I have this file structure:

└─ openapi
      ├─ index.yaml
      ├─ schemas.yaml
      └─ paths.yaml

Here is index.yaml:

openapi: 3.0.0
info:
  version: 1.0.0
  title: Test API

components:
  schemas:
    $ref: './schemas.yaml'

paths:
  $ref: './paths.yaml'

Here is schemas.yaml:

User:
  description: A user of the current system
  type: object
  properties:
    name:
      type: string
  required:
    - name

Here is paths.yaml:

/user:
  get:
    summary: Get current user
    responses:
      200:
        description: OK
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/User'

This is the returned error from paths.yaml: MissingPointerError: Token "components" does not exist. As soon as I remove the reference, it's working.

According to the specifications:

Reference – $ref: '#/definitions/myElement' # means go to the root of the current document and then find elements definitions and myElement one after one.`

This should work.

I just made a (non)working exemple: https://github.com/jumpman255/swagger-parser-child-bug

Start with the linked reproduction and its openapi/index.yaml, schemas.yaml, and paths.yaml files; run the example to reproduce the MissingPointerError for the child document reference. Trace how swagger-parser resolves $ref values across these files, and consider the issue done when '#/components/schemas/User' resolves successfully from paths.yaml without removing the reference.