Swagger hub XML response missing namespace and prefix

We have defined an xml response schema like below

Test1Response:
      type: object
      properties:
        Body:
         $ref: "#/components/schemas/Test1BodyResponse"
      xml:
        name: Envelope
        namespace: http://schemas.xmlsoap.org/soap/Test1/
        prefix: soap
    Test1BodyResponse:
      type: object
      properties:
         Message: 
           $ref: "#/components/schemas/Test1Response"
      xml:
        name: Body
        namespace: http://schemas.xmlsoap.org/soap/Test1/
        prefix: ns6

The example response payload matched the schema.

But, when I test. I get the XML response payload without prefix and namespace.

Is there an issue with using different namespace and prefix for the child objects?

Any help is appreciated!