A lot of places separate out the email/username field so it's a 2-step form. They will show you your avatar and maybe some other public info when you enter the

A lot of places separate out the email/username field so it's a 2-step form. They will show you your avatar and maybe some other public info when you enter the password. This is a better way to do this I believe, although it does make logging in with a password manager [slightly] more annoying.