As far as I can tell, a copter or plane using UCGS will fly directly into a hill if return home or joystick control is used. I had expected it would follow terrain as it does when creating an initial waypoint or survey. This is a serious risk, especially for flights in complex terrain that UGCS is supposed to be the best in! Basically, in terms of automated failsafes it is the same risk as the DJI return home button on the flight controller. Am I wrong?