Hi, I have a bundle with my custom lock screen which is a subclass of SFAuthorizationPluginView. I have implemented : override func view(for viewType: SFViewType) -> NSView? and override func buttonPressed(_ inButtonType: SFButtonType), as required in apple's documentation. I have replaced the default UI in the system.login.screensaver.plist with my mchanism. (the custom plist is in the end of this post) When I lock the screen, I get a black screen with the mouse hovering over. I can see in my logs that my view is loaded and the overriden function view(for viewType: SFViewType) is called. When I change the authenticate.plist to display my custom UI, it is displayed properly. Why do I get a black screen when activating the lock screen, but do get my UI when authentication is needed? What I am missing with the lock screen? Here is the system.login.screensaver.plist: ################################################################## class evaluate-mechanisms comment The own