Multiple responses using oneOf attribute do not appear in UI

Demonstration API definition

responses:
  '200':
    description: OK
    content:
      application/json:
        schema:
          oneOf:
            - $ref: '#/components/schemas/AuthorisationResponse'
            - $ref: '#/components/schemas/ForbiddenResponse'

Configuration (browser query string, constructor, config.yaml)

constructorConfig contains just the default values.

Expected Behavior

Since I have two schemas passed in as a $ref to the 200 response I would expect to see two schemas in the Swagger UI application.

Current Behavior

Instead I see only the reference to the 200 response and its description with no example responses displayed as JSON in the black boxes.

Possible Solution

Context