Before the release of beta 3 using face unlock the phone used to automatically unlock to home screen
Since update to beta 3 the face unlock works but you have to swipe to unlock after the face has been detected
Is this by design or a bug
Right now when you register a Face to unlock your device, it will ask if you want to enable "Stay on Lockscreen" option.
I agree that tt might be confusing for the users that already had Face registered and were never asked that option.
This option can be found in Settings > Biometrics and security > Face recognition > Stay on Lock screen