Description: I was playing a Ground mission, killed all the aliens on the map, and even stood inside the Observer UFO for 3+ turns with the mission not completing.
What Happened: I was just playing through the mission and realized it was not completing, and did a full walk through of the map and could not find any other aliens. I then decided to sit in the UFO for 3 turns with no success. I ended turn a few more times and nothing happened, no movement, or mission complete screen.
Further information: Save Game: https://www.mediafire.com/file/kh7prcgjb7r7fe5/Observer_UFO_mission_not_ending_Save.rar/file
