I don't know exactly how to reproduce this problem. In Editor, I made two OPFOR Infantry:Sentry group and ordered them to walk to a waypoint with Behavior as 'SAFE' and speed as 'LIMITED'. Try that and watch them. Maybe stalk them with BLUFOR unit like I did in the video I provided. Sometimes they will reproduce the problem, sometimes they dont. UPDATE: There must be a BLUFOR player stalking them.