Failed login attempt does not show username

When a user fails to login when using the wrong password (or username) it would be nice to know what user it is.
Current functionality seems only to cover the legacy API login.
It would be nice to know if it’s the wife, kid or an evil hacker trying to login with admin, root etc.

Currently the log shows:
2019-01-30 10:59:59 WARNING (MainThread) [homeassistant.components.http.ban] Login attempt or request with invalid authentication from x.x.x.x

I’m having this same issue. My instance is behind cloudflare so I never know who tried to login.
was it my wife? Was it someone trying to get in?