Helix completely is stuck and camera on after screen saver

Sometimes when I leave my Helix alone the screen saver kick in. When I try to use the Laptop again after a while, it has turned on the (back) camera and the camera app is completely stuck. No swipe, no Alt-F4 or Alt tab can get it out of there. I have to hold the powerbutton down for a hard-power off.
Does anyone experience the same?
Seems to me this is a software problem. I tried to install the new Settings app this morning. (this refreshes the camera sw and other drivers) but no improvements. Same problem remains.
Lenovo please help fix this.
Solved!
Go to Solution.

Swiping down on the lock screen should activate the camera.
This is a new feature of Windows 8.1 you can switch it off by going to the charms bar and selecting
Settings
Change PC Settings
In the PC Settings App select
PC and Devices
Lock Screen
Scroll down and you will see a Camera setting with a toggle button for
Swipe down on lock screen to use the camera
Matthew

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