I download the entire country. I ensure that it is updated before leaving the house before every flight. I only see this when I am not connected to the internet. Never used to happen, been using iFly for 5 years and this only started in June. It surprised me while flying and trying to zoom in to a closer view while approaching Payson Az. Since noticing it on that flight, I can replicate it by shutting off internet and data on my device. With either of those on, no problem.