If the robot leaves a catcher, or other object out in the Field away from Safety, and then moves on to do other stuff, yes, this is Stranding by R14. But that's probably not a problem, since the object gets left where it is.
Beware of Interrupting the robot while it is in the process of delivering the object, and having your team's Equipment out in the Field at the end of the match, though.
Steve Scherr