[GAMEPLAY]Volibear's Rolling Thunder can fail to act as a logical melee attack against Anivia'swalls

Quite simply, I just saw a Volibear successfully Rolling-Thunder-grab an Anivia through a properly placed wall. As a visibly melee attack, this makes no logical sense, so I'm calling it a bug; Voli clearly doesn't have the height to reach over the wall and reaching through it would do no good for trying to actually pull someone back (in fact the wall is dense enough that even ranged attacks getting through it is pretty dodgy in terms of logic.) The attack clearly needs a line check for physical obstacles in the way in addition to the range check, since its touch range is apparently pretty long. This might be something worth looking into on other melee attacks, possibly even all of them, as well. Game mechanics should make reasonable sense, yes?