Every good to great Ubisoft game has some kind of weird issue. This is one of them: Leonardo, due to his thirst for Ezio developed telepathic powers to let him know where he's at on this map in particular (The looks he gives Ezio are "Damn, you're a snack but you are my friend first and foremost")!
I stubbornly ignored this subtitle bark until it got on my nerves enough to talk to Leonardo.