The Security Key option is displayed for an account that does not have a Security Key setup

[kean]

Setup:

• Account A has a security key set up
• Account B has two-factor authentication enabled, but no security key

Steps:

• Log in with account A (using password autofill)
• Tap "Back" on the second factor screen
• Log in with account B

Expected Result

The second factor screen does not show "Use a security key" option.

Actual Result

• The second factor screen shows a "Use a security key" option.
• The nonce value and other parameters are the same as after the login with the account A

[kean]

Here's another scenario I tested which I believe has the same root cause.

Setup:

• Account A has a security key set up
• Account B has a security key set up

Steps:

• Log in with account A (using password autofill)
• Use passkey for account B as a second factor (incorrect passkey)
• See an error message and tap "OK" to navigate back to the login screen
• Login with account B
• Use passkeys for account B again (this time it's correct)

Expected Result

The login went through.

Actual Result

• The login fails because nonce is invalid (the nonce from the initial login was used)
• The app shows a non-user friendly error

[Ecarrion]

Hey @kean I tested the steps for your second scenario

Steps: Log in with account A (using password autofill)

• Use passkey for account B as a second factor (incorrect passkey)
• See an error message and tap "OK" to navigate back to the login screen
• Login with account B
• Use passkeys for account B again (this time it's correct)

And it worked for me with the latest trunk version.

https://github.com/wordpress-mobile/WordPressAuthenticator-iOS/assets/562080/b34b9d2a-f55a-41ab-a547-e3ab4f674759

Steps

• Autofilled credentials for ecarrionc
• Used security key for carrion.silver
• Got the invalid security key error
• Autofilled credentials for carrion.silver
• Used security key for carrion.silver
• Successful login

Where these the same steps you followed?

[kean]

I also couldn't reproduce it by following these steps using the WP-iOS build from trunk. Maybe it requires some additional steps. I suggest focusing on the original issue as there is likely the same root cause.