Multi-level allOf does not show

I have the following setup:

paths:
  /objects:
    post:
      operationId: addObject
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Obj'
components:
    schemas:
        Id:
            type: integer
            format: int64
            description: The ID of the object.
            example: 10765432100123456789
            readOnly: true
        IdString:
            type: string
            description: The ID of the object, in string format (for JavaScript)
            example: "10765432100123456789"
            readOnly: true
        IdObject:
            type: object
            description: Describes an object containing an ID.
            required:
            - Id
            properties:
            Id:
                $ref: '#/components/schemas/Id'
                readOnly: true
            IdString:
                $ref: '#/components/schemas/IdString'
                readOnly: true
        Obj:
            allOf:
            - $ref: '#/components/schemas/ObjCompact'
            - $ref: '#/components/schemas/ObjExtended'
        ObjCompact:
            allOf:
            - $ref: '#/components/schemas/IdObject'
            - type: object
                required:
                - Name
                properties:
                Name:
                    type: string
                    description: The name of the object.
                    example: ServerName01

In this schema, the properties in the ID object do not show in the final request body of /objects.

Start by loading the supplied OpenAPI schema in Redoc and inspect the /objects request-body rendering, focusing on nested allOf resolution. Done when properties inherited from IdObject appear in the final request body, including the Id and IdString fields.