Is there any reason why the runways of some airfield disappear as you zoom out, while others remain? It's a bit irritating when planning long journeys because you can't select the airfield as a starting waypoint at the desired levels of zoom (1:560,000 in my case). All you see is a coloured circle which denotes the ATZ. Airfields affected include Netherthorpe, Wickenby, Clacton and Derby on my copy of Skydemon (2.4.2.16291)

Surely if you had an engine failure, the very last thing you'd be doing is fiddling around with your GPS.