In fact, the User Accounts applet in the Settings allows creating a user with no password by putting it in the nopasswdlogin group, but as soon as the screen lock comes up, the user is unable to unlock the screen.
So the screen lock definitely needs to honour the nopasswdlogin group, and this is a bug with no real security implications.
In fact, the User Accounts applet in the Settings allows creating a user with no password by putting it in the nopasswdlogin group, but as soon as the screen lock comes up, the user is unable to unlock the screen.
So the screen lock definitely needs to honour the nopasswdlogin group, and this is a bug with no real security implications.