[Sign up and Sign in]: previews authenticated user is not remove, and will appear as soon as new user signs up.

To replicate the issue:

- Sign in a user
- Then sign out
- Then start to register a new user.

Expected issues is that you will be redirected to a page of an authenticated user the previews one.

Expected result, after sign up, redirect to sign in page.

If had hard time replicating the issue please feel free to reach out.