Won't stop moving, jumping, etc. after releasing WASD Space

I expected to release WASD Space etc. and have my player stop moving.

What happened was the player would not stop jumping, moving, watever be the case, and ended up jumping me into a creeper. It was actually kinda funny watching me try to get into my house
Steps to Reproduce:
1. For some reason, if I hit the WASD Space Buttons, instead of stopping after the button is released, keeps going
2. After a great deal of WASD mashing, I can finally get the Movement to stop, but it happens again as I try to move again.
3. ...