I have been using litchi for a few days now, and I was pretty confident today so I tried to go for something 5,700 feet away, called Regis College. All seemed to be going very well, and I still had a strong signal at 5,700 feet (the waypoint was around 5,744 feet away) and suddenly I lost signal. If you look at the flight log, HealthyDrones.com - Innovative flight data analysis that matters, you can see that it went from good signal to very poor very quickly. I thought that it would be fine because it should, in theory, go on and complete the mission, but instead, it went into RTH mode. when I regained connection, my controller was beeping and the screen said "RTH" even though I had 26% battery left. When I landed, I had 11% battery. Why did I lose connection so suddenly, and why did it not complete the mission and go to the next waypoint, which was about 200 feet from the home point, when it disconnected? I had it set to "go to the next waypoint" when it finished.