IF you happen to be standing near a tree or near/in a bush and try to exchange an item on the ground with an item in your inventory the item that was in your inventory will now be unreachable high up inside the tree/bush. The only recourse is the cut the tree/bush down which leaves the item floating.
Apparently the same issue that previously left items UNDER the ground when exchanging can now can leave them high off the ground if you're near/in the foliage of a tree or bush ;)