Auto throttles and switching views.

I've noticed that when switching views in cruise flight, window view to full screen and back again the auto throttles would close and the speed would drop off 30-40 kts or more. Then the auto throttles would reset to the proper setting and the speed would pick back up to cruise speed. I found that turning the auto throttles off before switching views stopped this from happening and your auto throttles and airspeed stay right where they should be.