Data Validation not taking place with uiversion 3 and openAPI 3.0.1

[caffeinatedMike]

I'm working on simultaneously refactoring and converting an old project from Swagger 2 to the new openAPI 3. The swagger doc renders fine, but if I attempt to make any requests with intentionally malformed content the validation errors are no longer thrown and all requests seems to successfully go through. It seems with this module's openAPI 3 implementation nothing is validated against the swagger spec.

Below is a bare-bones version of my code

from flasgger import Swagger, LazyString, LazyJSONEncoder
from flask import Flask, url_for
from flask_restful import Api, Resource

app = Flask(__name__)
api = Api(app)
app.json_encoder = LazyJSONEncoder
app.config['SWAGGER'] = {
    'title': 'RencomAPI',
    'uiversion': 3,
    'openapi': '3.0.1',
    'favicon': LazyString(lambda: url_for('static', filename='logo.png')),
    'swagger_ui_css': LazyString(lambda: url_for('static', filename='swagger-ui.css')),
    'specs_route': '/'
}

swagger = Swagger(app, template_file='static/Swagger.yml', parse=True)

class NewProduct(Resource):
    # Create a new product
    def post(self):
        pass

api.add_resource(NewProduct, '/product')

if __name__ == "__main__":
    app.run(debug=True)

And my Swagger spec file

openapi: 3.0.1
info:
  title: Proof-of-Concept
servers:
- url: http://127.0.0.1:5000/
- url: https://127.0.0.1:5000/
paths:
  /product:
    post:
      tags:
      - Product
      summary: Add a new product
      description: Create new product listings.
      operationId: addProduct
      requestBody:
        description: Product object to be added to your catalog
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/RawItem'
        required: true
      responses:
        200:
          description: Product created
          content: {}
        405:
          description: Invalid input
          content: {}
        501:
          description: Not Yet Implemented
          content: {}
      x-codegen-request-body-name: body
components:
  schemas:
    RawItem:
      type: object
      required:
      - upc
      properties:
        id:
          type: integer
          format: int32
        itemNumber:
          type: string
          description: Your unique code pertaining only to this product
          example: 1006-10
        upc:
          type: integer
          description: Universal Product Code
          format: int32

[caffeinatedMike]

@billyrrr @rochacbruno Any idea if this is actually a bug or am I doing something wrong?

[Lounarok]

This should be a bug. It seems validation only takes schemas in definitions into account.
I'm trying to fix it.