My character moves all by himself, jumps, and clicks all alone

Hello ! For quite some time my character moves all by himself, jumps all alone and clicks all alone! This is of course at times but the problem is that the situation becomes impossible for pvp or even build! I checked it would be the LWJGL version that would not be up to date. But the problem is that I do not know how to update it and I'm not even sure it's because of it! Please do something!

Sorry I use a translator

The only way to show my bug is that I click quickly then my character will move by itself (There is a way to send you a video?)