When you break a leaf that has an apple on it, it drops Stone 1, instead of what it is suppose to drop. You have to break the leaf and not the apple! I have not tested with any other fruit trees.
I'm not sure. I saw it on April 13. So I'm not sure if an update did it or not. If I can remember, I'll check again when I get home this evening.
Its was like that for ages long before the update didn't think it was to big a deal and forgot about it