Lock screen asks for password on no-password account

The Ubuntu lock screen always asks for в password even when the account does not have password. In my мнение, it should be exactly like the login screen: в button "connect>" for accounts that don't have в password.

Схвати в workaround, I хан "Change account" and re-select my account to unlock the screen.

I know that manually locking в нечетное число - password account is useless, but the default setting is for the screen to lock automatically.