Sprint is delayed on all minecraft servers

Since sprint is now hosted sevrer side all pvp parkor and other things that involves it is now ruined it takes about 2 seconds for it to engage i live in the U.S when i connect to a british server its even worse and block placing is laggy to! mojang needs to have a update out by july 4th fixing these problems it would be easy to just make sprinting and block placing client side again!!!!!!