So wow is like 7 years old, 7 years of improvements, bug corrections, reduced errors, etc. Still, trees in elwynn forest can be shot and casted through; this may sound like a stupid detail but hey, how many of us spend a while dueling there and that bug just makes your day. After such a long time of living with it, my guess they just left it like that on purpose. C'mon casters point a gun at me.