This has happened a lot of times recently on the last boss fight, illambris athor(the axe twin) will put shock AoEs on the ground but sometimes it won't display a red circle and is hard to see because it turns into a clear circle, the only way you can see this is if you are on the outside of the platform. Now i tell everyone in the group before we get here to watch out (with randoms they never listen lol) is this a bug or meant to be part of the fight?