The bug I've found is stat.useItem.261. (ID 261 - Bow). In the 1.7 snapshot, the useItem stat in the scoreboard is supposed to track uses of a certain item. I thought it would be nice to make a firing range map, which tracks how many tries you've used. Unfortunately, it does not work. If you run the command (/scoreboard objectives add bow stat.useItem.261), and shoot a bow either in adventure mode, survival mode, or creative mode, the score will not increment. The objective was added under (/scoreboard objectives list), but did not add to the total when the bow was shot.