Trails do not stick to objects when paused, remain between sims

[Gaiiden]

See the video for the issue in action:
https://www.youtube.com/watch?v=a4o8wuTLdGw&feature=youtu.be

Trails also persist between loads of different simulations until the program is restarted. It doesn't seem to have any averse affect on things other than cluttering up the screen eventually, but would be nice to see them stick to the object properly. I don't know why it only affects the one body not the others, although that body is recently added to the simulation, which loaded with the rest already present