I have witnessed the same unusual bug anomaly occur many times over the past 4 weeks now and it has resulted in hundreds of deaths. A bug where AOE circles do not appear, however Healing Circles do. The only Circles that do appear are healing springs and other assorted player AOE heals.
I play trapper ranger and none of my utility traps show up so its a bit difficult to lure players or creatures to my traps since I can’t see them, just using memory.
I’ve made several verbal complaints in-game to see if other players were experiencing this same issue and most commonly players say its due to slow performance issues with my PC. This is not the case at all. My PC is extremely fast, so performance is not my issue. This anomaly appeared right after a major patch, and I dont remember exactly which, and when. I never experienced it before this, nothing even remotely close.
I also noticed that this same bug effects creatures or characters in Cinematic cut scenes in stories, or dungeons, making the players or creature completely invisible. For example the last boss creature in COE* story-line didn’t appear upon viewing the cut scene.
I would like to hear possible theories of the problem, and player opinion. I’ve puzzled over this for many hours and came to the conclusion it is in-fact a bug. If it was performance related, I would have experienced this sort of issue from day 1 using the same hardware.