alosso: It's not a bug.
I would have to disagree with that Alosso. I believe it is a bug because it's only recently started showing up, plus, the distance does "not" change on the screen of the person hitting the shot, only on the screen of the person not hitting the shot. The reverse is true also, when the other person is hitting, their distance on their screen does not change but it will change on the person watching the hit.
In the screenshots that Sarah has posted here, they are "her" screenshots, if the person driving the ball had taken the exact same screenshot at the exact same time, the distance would stay the same and not change. I started noticing this approx 2 to 4 weeks ago, I can't put a finger on the exact date. The difference between the two can easily 1 or 2 clubs so it could have a major impact on what club to hit.