oneOf cases referencing external files are empty and recursive from the third case

[cmeeren]

I have the following response:

application/json:
  schema:
    oneOf:
      - $ref: 'errors.yaml#/SignInNoValidMobile'
      - $ref: 'errors.yaml#/SmsSendingFailed'
      - $ref: 'errors.yaml#/SignInInvalidCredentials'

In errors.yaml I have defined the three types. They are, for all intents and purposes, identical. (I have even tried copying them from one another and only edited the name.)

It seems that all oneOf cases from the third element are rendered as empty and recursive:

The first two work fine, but no matter which order I put them in, the third one is rendered as shown above. The same goes for a fourth element that I tried adding.

[RomanHotsiy]

Could you setup a minimal reproducible sample for this?
Thanks

[cmeeren]

It seems an allOf was also needed.

Main file:

openapi: 3.0.0
info:
  version: 1.0.0
  title: Test

paths:

  /endpoint:
    get:
      responses:
        '200':
          content:
            application/json:
              schema:
                oneOf:
                  - $ref: 'types.yaml#/Type1'
                  - $ref: 'types.yaml#/Type2'
                  - $ref: 'types.yaml#/Type3'
                  - $ref: 'types.yaml#/Type4'
                  - $ref: 'types.yaml#/Type5'

types.yaml:

BaseType:
  properties:
    base:
      type: string

Type1:
  allOf:
    - $ref: '#/BaseType'
    - properties:
        foo:
          type: string

Type2:
  allOf:
    - $ref: '#/BaseType'
    - properties:
        bar:
          type: string

Type3:
  allOf:
    - $ref: '#/BaseType'
    - properties:
        baz:
          type: string

Type4:
  allOf:
    - $ref: '#/BaseType'
    - properties:
        qux:
          type: string

Type5:
  allOf:
    - $ref: '#/BaseType'
    - properties:
        har:
          type: string

Behavior: