Trident Sword Glitch

So the bug works like this: Go in to a 32 by 4 area of water. Hold a trident with riptide (any level) in your hand. use the trident, then quickly go to any item in your hotbar. It slides up and then pops down. Unfortunately, my demonstration was too big of a file, so here is a link: https://www.youtube.com/watch?v=oquE6yP30Ks&feature=youtu.be