Done a bit more testing and it appears to be solely the presence of the external monitor that renders the lock screen unlockable.
The simple lock screen works OK with an external monitor, it's only the widget enabled lock screen that is affrected.
Done a bit more testing and it appears to be solely the presence of the external monitor that renders the lock screen unlockable.
The simple lock screen works OK with an external monitor, it's only the widget enabled lock screen that is affrected.