BUG 19: Sign up / Sign in fields do not work correctly
Summary
What is the current bug behavior?
If a username or email has already been taken when user registers, the fields will remain "filled" when you're changing to the "Sign in" page. However, the software will return an error for the fields being blank, which results in the need of clearing the fields manually.
What is the expected correct behavior?
When changing from "Sign up" to "Sign in", the fields either remain fulfilled and they work or they will be cleared when the route changes.