Safari was storing an old password for my Gmail account, so it kept pre-filling an incorrect value.
It didn’t let me delete the obsolete entry, though. I tried clicking “Remove”. Nothing happens. “Remove All”. Still nothing.
Even when the checkbox to auto-fill usernames and passwords is empty (unchecked), the form still gets auto-filled!
Resetting Safari didn’t help, either.
The answer: Keychain Access.
Once you know that you have to use the Keychain, everything seems to work fine.
Keychain Access is located in Applications/Utilities.
your post here comes to the first result of Google search and pin point directly to solve my problem for a few weeks. Thanks for sharing
Thanks for this advice, since weeks I was trying to cope with this issue.
Many Thanks for the info. This solved my issue too.
Thanks for sharing! Even Safari’s help doesn’t mention Keychain as a possible source of usernames. Having them stuck in the list was baffling.