Maybe it's client's bug, like core jewell o0 (Don't ask me, that's what I thought right now :P) It should remove all debuffs but it doesn't remove stun/fear/sleep etc. So maybe range of raid bosses is like that, a client bug and they cannot fix it. But they can punish people doing it. lol Soil .. when you stun work 100 % admin can punish you .. lol .