How do I permanently disable passkeys in Brave on macOS?

I’ve already disabled password/passkey saving, but Brave still throws the “Use a passkey”

I want this feature completely disabled. Is there a working flag, policy, Terminal command, or other permanent fix?

Brave v151.1.93.137

macOS 27

Do you see the same issue with the Bitwarden extension disabled? Thanks!

The Bitwarden extension was not installed for my primary Brave browser profile where I still see this passkey issue. It’s installed on a different profile, which I occasionally use.