False "oas3-valid-media-example" error reported: "property must match exactly one schema in oneOf"

[JPPortier]

Describe the bug

When validating an example with oneOf schema, an oas3-valid-media-exampleerror is reported even if correct

To Reproduce

1. Given this OpenAPI/AsyncAPI document spectral-issue-poc.yaml file content:

   openapi: 3.0.2
   info:
   description: POC
   title: POC
   version: "1.0"
   license:
   name: MIT
   url: "https://www.poc.com"
   contact:
   email: support@poc.com
   name: support at poc
   url : "https://www.poc.com"
   servers:
   - url: https://foo.com
   security:
   - Basic: []
   tags:
   - description: foo description
   name: Poc
   paths:
   '/poc':
   post:
     description: foo description
     tags:
       - Poc
     summary: Trigger a poc
     operationId: poc-operation
     requestBody:
       $ref: "#/components/requestBodies/poc-request"
     responses:
       "200":
         description: "Done"
   components:
   examples:
   
   poc-sample:
     summary: poc sample
     value:
       message:
         text_message:
           text: "This is a text message."
   
   requestBodies:
   poc-request:
     description: This is the request body for sending a message. `app_id`, `recipient`, and `message` are all required fields.
     content:
       application/json:
         schema:
           $ref: "#/components/schemas/poc-payload-request"
         examples:
           sample:
             $ref: "#/components/examples/poc-sample"
     required: true
   
   schemas:
   poc-payload-request:
     type: object
     required:
       - "message"
     properties:
       message:
         $ref: "#/components/schemas/message-types"
   
   message-types:
     type: object
     oneOf:
       - $ref: "#/components/schemas/message-type-foo"
       - $ref: "#/components/schemas/message-type-text"
   
   message-type-foo:
     type: object
     properties:
       foo_message:
         type: object
         required:
           - foo
         properties:
           foo:
             type: string
   message-type-text:
     type: object
     properties:
       text_message:
         type: object
         required:
           - text
         properties:
           text:
             type: string
   
   securitySchemes:
   Basic:
     type: http
     scheme: basic

And this ruleset.yaml file:

extends: ["spectral:oas"]

2. Run this CLI command '....'

   spectral lint "spectral-issue-poc.yaml" --ruleset ruleset.yaml

3. See error

   
   spectral-issue-poc.yaml
   39:17  error  oas3-valid-media-example  "message" property must match exactly one schema in oneOf  components.examples.poc-sample.value.message

✖ 1 problem (1 error, 0 warnings, 0 infos, 0 hints)

**Expected behavior**
Example is compliant with spec and error should not been reported

**Environment (remove any that are not applicable):**
 - Library version:  
   - **spectral --version**: `6.11.1`
   - **Docker image**: `docker.io/stoplight/spectral@sha256:d55a6be334e3d50e1f3598e1fd4d51c5c1734d033aae295b69efa829420cb979` (https://hub.docker.com/layers/stoplight/spectral/6.11.1/images/sha256-d55a6be334e3d50e1f3598e1fd4d51c5c1734d033aae295b69efa829420cb979?context=explore)
 - OS: Docker image launched from MacOS
 - Browser: N/A

**Additional context**
Add any other context about the problem here.

[samcrutt9900]

@mnaumanali94 did you manage to find out the root cause of this issue when triaging it ?

[samcrutt9900]

Interestingly it does validate correctly if you use a single OAS example:

requestBodies:
    poc-request:
      description: This is the request body for sending a message. `app_id`, `recipient`, and `message` are all required fields.
      content:
        application/json:
          schema:
            $ref: "#/components/schemas/poc-payload-request"
          example:
             message:
              text_message:
              text: "This is a text message."
      required: true

[piotr-cz]

@samcrutt9900

Reducing examples to example didn't help in my case, it might not be related

Update: I got this warning because I have use oneOf for integer and float As described here and here I switched to anyOf