Autowalk/Autojump glitch.

Well basically what me and some other players are experiencing in 1.12, is that, when we sometimes hold the movement keys (w,a,s,d) or the jump key(spacebar) it soometimes makes us keep on walking towards a particular direction or makes us keep on jumping even when we have let go of the keyboard entirely. P.S. I don't have sticky keys enabled incase you were wonddering.