[REG] New login.qt.io/login breaks (Firefox) password manager(s)

Since the last update a few weeks ago, Firefox no longer recognizes the Login/Password entry fields as login credential input fields, and therefore doesn't auto-fill them from the password manager.

It seems like at least the email field is not marked up correctly. Autocompletion of email addresses doesn't work there, and the DuckDuckGo plugin also doesn't inject it's usual option icon there, either.