amplify-cli: Mutations not triggering subscriptions

Describe the bug Using the Amplify GraphQL Client to subscribe to a subscription and call a mutations does not result in a socket notification via the subscription

Amplify CLI Version 4.21.1

To Reproduce

const createTest = /* GraphQL */ '
    mutation CreateTest($input: CreateTestInput!) {
      createTest(input: $input) {
        __typename
        id
      }
    }
'

useEffecct(() => {
API.graphql(graphqlOperation(createTest, { input: { id: (new Date()).toISOString(), name: (new Date()).toISOString() }}))
        .then(console.log) <==== successfully called
        .catch(console.log)
}, [])

useEffect(() => {
    API.graphql(graphqlOperation(`subscription OnCreateTest {
        onCreateTest {
        __typename
        id
      }
    }`))
    .subscribe({
      next: (todoData) => { /// <==== this is NEVER called
        console.log("todoData", todoData);
      },
      error: console.log, /// <==== this is NEVER called
    })
}, [])

Expected behavior Calling the mutation should result in the subscripting firing

Desktop (please complete the following information):

• OS: Mac

Additional context

type Test 
  @model(subscriptions: { level: public })  
{
  id: ID!
  name: String!
}

const awsmobile = {
    "aws_project_region": "us-east-1",
    "aws_cognito_identity_pool_id": "xxxxxxx",
    "aws_cognito_region": "us-east-1",
    "aws_user_pools_id": "xxxxxxx",
    "aws_user_pools_web_client_id": "xxxxxxx",
    "oauth": {},
    "aws_appsync_graphqlEndpoint": "https://xxxxxxx.appsync-api.us-east-1.amazonaws.com/graphql",
    "aws_appsync_region": "us-east-1",
    "aws_appsync_authenticationType": "AMAZON_COGNITO_USER_POOLS",
    "aws_cloud_logic_custom": [
        {
            "name": "AdminQueries",
            "endpoint": "https://xxxxxxx.execute-api.us-east-1.amazonaws.com/staging",
            "region": "us-east-1"
        }
    ],
    "aws_mobile_analytics_app_id": "xxxxxxx",
    "aws_mobile_analytics_app_region": "us-east-1",
    "aws_user_files_s3_bucket": "xxxxxxx",
    "aws_user_files_s3_bucket_region": "us-east-1"
};


export default awsmobile;

import awsmobile from './aws-exports';

Amplify.configure(awsmobile);

Amplify folder