This is a problem I've been experiencing the past few days where whenever I stop pressing a key like W, my character keeps moving until it stops all of a sudden farther than where I wanted it to be. This issue also doesn't allow me to sprint nor jump as often as I want to. It usually happen in servers but there have been times it's happened on single player worlds as well. I've tried uninstalling but that didn't fix anything, only erase my worlds with a lot of progress on them.