Not sure what causes it but sometimes on the Gather Info missions the arrow that is supposed to point to the next object gets stuck in one direction and the distance doesn't change. I only realized that when I made it all the way back to the ground and the arrow was still telling me to go lower.
Just thought I would mention there is an art tag that about 200 games have been tagged with, maybe if more people were aware of these tags they wouldn't have to add categories for games that don't necessarily have much gameplay wise in common.
I kinda wish you had a larger area to possess people from, seems like it would make the game a bit more fluid if you didn't have to line up almost exactly on top of a person to possess them.