Unable to resolve references in schema

[whoareyoukid]

Q&A (please complete the following information)

• OS: macOS
• Browser: chrome, safari
• Version: 133, 18.3
• Method of installation: npm
• Swagger-UI version: 5.20.0
• Swagger/OpenAPI version: OpenAPI 3.1

Content & configuration

Example Swagger/OpenAPI definition:

openapi: 3.1.0
info:
  title: Cat/ Dog Pet Store API
  description: An example API for a pet store
  version: 1.0.0
paths:
  /pets:
    get:
      summary: List all pets
      operationId: listPets
      responses:
        '200':
          description: A list of pets.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PetList'
components:
  schemas:
    PetList:
      type: array
      items:
        $ref: '#/components/schemas/Pet'
    Pet:
      type: object
      required:
        - petType
      properties:
        petType:
          type: string
      discriminator:
        propertyName: petType
        mapping:
          dog: '#/components/schemas/Dog'
          cat: '#/components/schemas/Cat'
        x-custom-extension: This is a custom extension for the discriminator
    Dog:
      allOf:
        - $ref: '#/components/schemas/Pet'
        - type: object
          properties:
            breed:
              type: string
            barkVolume:
              type: integer
              description: Volume of the bark
    Cat:
      allOf:
        - $ref: '#/components/schemas/Pet'
        - type: object
          properties:
            color:
              type: string
            purrLoudness:
              type: integer
              description: Loudness of the purr

Swagger-UI configuration options:

SwaggerUI({
        spec: apiSpec,
        dom_id: '#api-ui-container',
        defaultModelRendering: 'model',
        showExtensions: true,
        deepLinking: true,
        plugins: [DisableTryItOutPlugin],
        onComplete(): void {
          setTimeout(() => that.swaggerUiOnComplete(that), 1000);
        },
      })

Describe the bug you're encountering

1. On clicking 'Expand All' button, nothing happens.

2. The refs are not correctly resolved

Expected behavior

The refs should be resolved properly