Wrong oneOf value when used with allOf in the same hierarchy

Q&A (please complete the following information)

• OS: Windows 7
• Browser: Firefox 70.0.1
• Version: Swagger editor (online version)
• Method of installation: no installation
• Swagger-UI version: Swagger editor (online version)
• Swagger/OpenAPI version: OpenAPI 3.0

Content & configuration

Example Swagger/OpenAPI definition:

openapi: 3.0.0
info:
  version: 0.0.0
  title: test

paths: {}

components:
  schemas:
  
    Rich:
      type: object
      properties:
        bank_account:
          type: string

      
    Pet:
      type: object
      properties:
        pet_type:
          type: string
      discriminator:
        propertyName: pet_type
      oneOf:
        - $ref: '#/components/schemas/Cat'
        - $ref: '#/components/schemas/Dog'
        - $ref: '#/components/schemas/RichDog'
        
    RichDog:
      type: object
      allOf:
        - $ref: '#/components/schemas/Rich'
        - $ref: '#/components/schemas/Dog'
        
        
    Dog:
      allOf:
        - $ref: '#/components/schemas/Pet'
        - type: object
          properties:
            breed:
              type: string
              enum: [Dingo, Husky, Retriever, Shepherd]
              
    Cat:
      allOf:
        - $ref: '#/components/schemas/Pet'
        - type: object
          properties:
            age:
              type: integer

Describe the bug you're encountering

When I try to use both anyOf and oneOf, the generated ui mix up the oneOf into a wrong type.

To reproduce...

Steps to reproduce the behavior:
Use the yaml below in the online editor, having 4 types :

• Rich
• Dog
• Cat
• RichDog (allOf Rich and Dog)
• Pet (oneOf Dog, Cat and RichDog)

Then the Dog type contains a OneOf with all its sibling types and itself (Cat, Dog and RichDog).

Expected behavior

Not to see a wrong oneOf value in the Dog type.

Screenshots

Start by loading the supplied OpenAPI 3.0 YAML in the Swagger Editor online version and reproduce the generated Dog schema. Inspect the schema rendering path for the incorrect oneOf value when Pet uses oneOf and RichDog combines Rich and Dog with allOf. Done means Dog no longer displays the unrelated sibling types in its oneOf.