Collosus Rumblus Aoe
GuildWars 2 is good game with bad management.
It’s been like that for a while I think. You can be good distance away while he is facing another direction. Yet, you still get clobbered with it. One of the groups I was in had a member who said that the area of effect at the moment has a 280 degree radius. It definitely seems like that when it takes you down and you aren’t in line of sight of it or near him.
The one who does not see seems to be you, https://forum-en.gw2archive.eu/forum/game/dungeons/Colossus-Rumblus-Needs-A-Nerf/first#post1025076
https://forum-en.gw2archive.eu/forum/game/wintersday pretty active for “irrelevant stuff noone likes”.
I get hit by it standing directly behind him quite a lot.