Its probably always worked liked this but I only noticed it for the first time last night during "consulate docks"
I was targeting an enemy that I did not have a clear line of sight to and I got the message on screen saying "path blocked" or whatever it says. Which was fine. But when I used barrage the 6 enemys around my target took their damage. The target did not take damage as my shot to him was obstructed as I expected but I was surprised that those adjacent to him did take damage.
I did some more testing and I was doing damage to these adjacent targets even though I also didn't have a clear line to any of them either. They where all behind a wall I couldn't get round and I couldn't hit my target but I could happily hit those next to him with barrage.
I didn't think it should work this way since I should be firing 6 seperate arrows and if 1 doesn't have line of sight to the group I wouldn't expect the others to either.
Barrage is a spread of arrows,which means it should hit a general area,and not be totally focused on one opponent. If the arrows went through walls,it's a glitch,but don't look a gift horse in the mouth. Take the kills and keep it moving.
Yeah I love it when that happens...you're targeting one enemy but killing other ones around it. ^^ If you're clever as well you should be able to attack from a certain area where you can hit your enemy but your enemy is obstructed from attacking you. Depends on where you are, I guess. As much as I love barrage, there are way too many threads on it. o.O Peace out.