Problem with Litchi and UCGS

I flew a flawless photogrammetry mission with the circlegrammetry autonomous flight app of UCGS. After the mission was finished, the return to home started and was suddenly interrupted as the MIni 4 Pro hovered without descending and made a beeline to a tree resulting in the drone’s destruction. During the hover, I attempted to land the drone by using the left stick, but there was no response. Has anyone else had this issue?

What you describe is not the expected behavior. Your flight logs would contain information that might help troubleshoot this. AirData.com is a good resource for managing your log files. PhantomHelp.com has a flight log viewer that will allow you to replay your flight and see any error messages that occurred.