When i tryna to long press my wallpaper(for 3D touch to play video) it will gone(sometimes late) after it will appear back even i still long press tho. Anyway thats all nice tweak.
When the screen is tapped to toggle the date/clock view to be hidden or not it requires the screen to be off to run the clock/date view controller's viewDidLoad. Maybe have the viewDidLoad be called immediately after updateLabels has been hooked.