Recently I was in an Eggwars game on the map Instruments. There was a whole team of hackers and I expected Sentinel to notice and consequently ban them during the game, however, that didn't happen. I think the reason for this is because they figured out a way to bypass Sentinel's detection. They were using fly hacks along with anti knockback, but what I found most interesting was that every time they would proceed to use fly hacks they would first place tnt and fly as soon as it exploded as if the tnt had blasted them up. I think the use of tnt and its effect of blasting players into the air is the cause of Sentinel not being able to detect their hacks. Anyways, I hope someone patches it so that this will no longer be a problem.