User has to login twice after Enabling Cognito Login

We have noticed that after enabling login and configuring a Cognito user pool, the application will sometimes force the user to login twice. We have also noticed that the application will load twice on initial navigation to the main page. I'm thinking it may be related to the redirect URLs but not quite sure. Could someone provide any insight on why this may be happening?

Start by reproducing the issue with login enabled and a configured Cognito user pool, comparing the redirect URLs and observing the initial navigation. Done means the application loads once and users are not prompted to log in twice; the issue provides no files or tests to inspect.

Written by the indexing model from the issue text.