Amplify login could not redirect to Canvas LMS app

**Please describe which feature you have a question about?**
AWS Amplify login

**Provide additional details**
We have the Canvas LMS application and would like to use Cognito as our Identity Pool and customise the login UI by using Amplify. The problem we have met is:
- If we login through Cognito Hosted UI, everything's perfect.
- if we login through Amplify API, we could not make redirect to our Canvas LMS app since the cross domain is blocked. Which means we can login into Cognito, but our application is not record us as logged in user.

If you have any idea about this, please help. Thanks in advances.

**What AWS Services are you utilizing?**
AWS Amplify, AWS Cognito

**Provide additional details e.g. code snippets**

Start by reproducing the AWS Amplify API login flow with AWS Cognito and the Canvas LMS application, then inspect the cross-domain redirect behavior in the browser. The issue provides no files or tests; done would mean that a user authenticated through Amplify is recognized as logged in by the Canvas LMS application.

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