Final on Nostr: It appears you misunderstood the feature, in after-first unlocks, users have the ...
It appears you misunderstood the feature, in after-first unlocks, users have the choice to use your OS credentials instead of their fingerprint when doing unlocks.
If you use a PIN as your OS credentials than it will ask for a PIN regardless of if it's wrong or right as the OS prevents the unlock after 5 incorrect attempts. Get the fingerprint wrong, it's your OS PIN, if it's right, then it's the 2FA PIN you set up.
The feature is used for users who use passphrases, not PINs. If you turn your default PIN into a password, try the same thing and see what happens. You'll be asked for your password instead.
If you use a PIN as your OS credentials than it will ask for a PIN regardless of if it's wrong or right as the OS prevents the unlock after 5 incorrect attempts. Get the fingerprint wrong, it's your OS PIN, if it's right, then it's the 2FA PIN you set up.
The feature is used for users who use passphrases, not PINs. If you turn your default PIN into a password, try the same thing and see what happens. You'll be asked for your password instead.