New glitch that makes you take no damage? -Tester

I keep seeing people take no damage at all when i hit them idk how it happens currently I believe its a new glitch that came up because of a error in code?? some people in pit pvp are taking no damage I cant even hit them but they can still hit me... just like invis glitch but you can see the player this time. Thanks! From Testor To Vector and his team