Is your feature request related to a problem? Please describe.
The new back-office "Log in" screen has a breadcrumb even at the "root" level.

Describe the solution you'd like
Only show the "Log in" breadcrumb when you are on a child screen, like "Forgot password" or "Register".

Describe alternatives you've considered
Remove all the breadcrumbs from these pages, and expect people just to rely on links and the back button.