Strange UI blinks after login

[VladimirCores]

I use latest version if Authorizer with code:

const authorizer = new Authorizer({
  authorizerURL: 'http://localhost:8081/',
  redirectURL: window.location.origin,
  clientID: '9a8498c5-6c09-4881-82c0-ae91626515b2', // obtain your client id from authorizer dashboard
});

And that is what I see on login:

What is this strange UI that appears for a second after login?

[lakhansamani]

@VladimirCores I think I know what is appearing there,
Can you share more information on how you have implemented this UI?
Are you using the default app from the authorizer for login or you have built the custom UI?

[VladimirCores]

The call authorizer.authorize({ response_type: 'token', use_refresh_token: false }) navigate to url where Authorized running http://localhost:8081/app/?state=...