Unable to obtain user email using Sign in with Apple on Safari for iOS

When using Sign in with Apple on desktop, or when using "Use another AppleID" option on iOS I'm able to receive the user's email as part of the JWT on their first authentication attempt. However, when using the "Continue" button on Safari for iOS where it uses FaceID it does not include the user's email in the id_token JWT regardless of whether or not it is their first time logging on. Hoping there is just something I'm missing somewhere, but I'm not even getting an option to specify whether I want to send my email or use the anonymous email like I do through the browser method.