Randomly one day i was playing minecraft and my aim started to drift upward constantly. It appears to only happen when i try to look down. I tried to see if it was my controller by testing this on other games and it was not my controller. I have also tried normal trouble shooting procedures (reloading the game, deleting and redownloading, etc.) and that did not help at all. So my instincts think that this is some kind of bug as it appears to be happening to other players according to other reddit users. I hope this can be remedied as it greatly hinders my gaming experience.