No, does pretty much the exact same thing. From Roboform, it inserts the email address, pauses a second or two, then goes to the 6-digit prompt with the email visible. So Roboform or something seems to be triggering the “Email me a one-time login code” even though I never clicked it, as opposed to entering the password and proceeding direct to discourse.
I recall a while back one can download a free copy of Roboform and have 10 logins, if you want to exactly test that particular password manager.
https://meta.discourse.org/t/easier-account-signup-using-email-codes/407068/42