I think that's just physics, I noticed the same behavior with my Jabra headphones. If I have my phone lying somewhere I can walk away quite some distance but if I have it in my left pocket and only the right headphone in while walking outside ( which I usually do this way) the connection becomes somehow spotty. My guess is that in an open space where there is nothing to effectively bounce off the waves the only path left is through my body which is so much water that it dampens the signal to a point where it becomes unreliable