AoE Attacks through walls

Not sure if this has been reported yet but if you stand next to any wall or map structure and you can see mobs on the other side of that structure your AoE attacks will pass through the wall and damage the mobs on the other side. There is a 'sweet spot' that is right up to the wall, a fraction away and it doesn't work. I noticed this during mapping, not sure if this effects the campaign. Also I have only tested this with Storm Wave (RID#894149390)