iOS: Login form submission not functional in some cases

Not sure how likely this is to happen, but the login functionality stops working once the “Login” button is clicked without ever putting focus into the email address field. If you subsequently enter a valid email, the login continues to remain unresponsive. If you enter invalid text, the login remains unresponsive as well, instead of displaying an error message.

Steps to reproduce:

1. Open the app on iOS
2. Click the Login button without clicking into the email address field, and notice that nothing happens (expected: an error message appears)
3. Enter a valid email address
4. Click the Login button, and notice that nothing happens still (expected: login works)

See screen recording.

Start by reproducing the issue in the iOS app using the listed login-button and email-field steps, then inspect the login form entry point and the screen recording for the failing state. Verify that submitting without email focus shows an error, that entering a valid email enables login, and that invalid text displays an error.