I've had the same problem, in STFs as well as in PvP.
It seems like what it's doing is setting me to 'follow' my current target. A couple of times I've actually ended up butted up against my target as a result of this. I'm not sure if that's the same thing that it's going for others, or not.
I actually found it somewhat helpful in PvP, since I kind of suck at maneuvering and using skills at the same time (sad, I know).