issues getting flask-cors to work with flask-restx namespaces with a specifed path

I left a comment in https://github.com/corydolphin/flask-cors/issues/289 but was told that "This issue must be closed now", I can only interpreter that as I should open a new issue :)

I have of course tried everything in that thread but it didn't help me resolve my issue.

I have assembled a reproduction case below. In the console that is running flask I don't get any relevant logs and the website is saying Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://127.0.0.1/api/v1/test. (Reason: CORS request did not succeed). Status code: (null).

Can someone see if there is something wrong with my general setup or if flask-cors simply doesn't work with the kind of setup I am trying to accomplish?

from flask import Flask
from flask_cors import CORS
from flask_restx import Namespace, Resource, Api
from flask import jsonify, make_response
from flask import Blueprint, render_template_string
import logging

logging.basicConfig()
LOGGER = logging.getLogger("reprod-case")
LOGGER.setLevel(logging.DEBUG)
LOGGER.info("Created LOGGER")
logging.getLogger('flask_cors').level = logging.DEBUG

# Create the restx namespace with a specified path
ns = Namespace(name='api_v1', path="/api/v1")

@ns.route('/test')
class Deck(Resource):
    def get(self):
        print("get")
        return make_response(jsonify({"message": "You did a Get!"}), 200)

    def put(self):
        print("Put")
        return None, 201

html_page = """
<html lang="en">
<body>
<button type="submit" name="myButton" value="Value">Click Me</button>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
<script>
$(document).ready(function() {
    $('button').on('click',function(e){
        const vote_value = e.currentTarget.attributes.value.value;
        console.log()
        $.ajax({
            type: 'GET',
            crossDomain: true,
            withCredentials: true,
            url: 'http://127.0.0.1/api/v1/test',
            contentType: 'application/json'
        })
    });
});
</script>
</body>
</html>
"""

# Blueprint for the webpage and add a route
bp = Blueprint("/", __name__)

@bp.route('/')
def home_route():
    return render_template_string(html_page)

# Setup the app, Cors, add the namespace and blueprint
def create_app():
    app = Flask(__name__)
    # CORS(app, resources={r"/api/*": {"origins": "*"}},
    CORS(app,
         resources={r"/api/*": {"origins": ['http://192.168.50.16:5000', 'http://localhost:5000']}},
         supports_credentials=True
         )

    api = Api(doc="/api/", title="Endpoints")
    api.add_namespace(ns,  path="/api/v1")
    app.register_blueprint(bp)
    api.init_app(app)
    return app

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

corydolphin / flask-cors

issues getting flask-cors to work with flask-restx namespaces with a specifed path #308