Referenced components in "items" not generated?

[exoego]

paths:
  "/foo/{id}":
    get:
      responses:
        '200':
          description: get Foo
          content:
          content:
            application/json:
              schema:
                "$ref": "#/components/schemas/Foo"
      ...
components:
  schemas:
    Foo:
      type: object
      properties:
        id:
          type: string
        nested:
          type: object
          properties:
           bars:
              type: array
              items:
                "$ref": "#/components/schemas/Bar"

If we have something like the above, the missing component Bar should be generated, but it is not.
https://github.com/k0kubun/rspec-openapi#can-i-use-rspec-openapi-with-ref-to-minimize-duplication-of-schema