AA login page with placeholder text displayed is Misleading

Anyone experience the similar user interface issue that causing user confuse to provide the correct username in AA login page? 

In my Production deployment, the username here that want user to keyin in their email login id. But this page by default having a placeholder with REPOSITORY/user. 

Report this to support team but the feedback that this is not possible to remove by configuration in AA, it definitely need code change. 

Because of this simple issue, i receive a lot of support ticket reporting login issue.