Changing name

So small bug here, nothing to worry about, it's more ease of life than anything else. So if a friend of yours changes names (ex: from "Derp" to "XxDerpXXRektxX", because why not) and you are in-game, if he messages you, you are unable to use the /r command because it says that "that player is not in your friend list". The twist here is that you have to use the /msg [PlayerName] command with the old name ("Derp" here) and that's just plain annoying if you just want to coordinate a game after the one you are playing at the moment.