Basically the anticheat has been bugging for me and my faction members greatly since its implementation again. I'm personally on 1.8.9 with labymod but I know that people with other versions are having similar issues. -"stand still bug": the anticheat will randomly glitch you into standing still server side while you are actually moving around client side. It is very common and very annoying. The only way to fix it is to 'resync' with your body by teleporting somewhere or logging out. one way that it can be incredibly annoying is if you are building a 1x1x256 high tower by jumping up and placing blocks. You can actually suffocate yourself and you are forced to teleport somewhere else. -"noreg in pvp bug": this bug is actually gamebreaking in the sense that if it happens you cant pvp. It has occurred to me and my friends a couple of times since yesterday. Basically there is a random situation in which you cannot hit anyone while they can freely hit you. It happened to me personally once but I havent pvp'd since, I just know it exists.