Yea, it happened to me after I was booted during the baal event. When I went in it was working as it always did, but some of our guild members were saying that they couldn't hide players, and after I got booted and went back in, it was that way for me also. As I said, I do not mind that in heroic realms or the wilds, but in an event like that that has so many players in one spot, it definitely causes a lot of game lag and such. Would love for the Hide Aerie Players to work in just the Baal/Cerberus if it is indeed a permanent change to the wilds/heroic realms.