Aim assist (Aim snap) BUG in "Nightmare difficulty" ruins the game.

Found a bug that I and many other users who playing on "Nightmare difficulty" encountered.

In the default settings on "Nightmare", "Aim Assist" and "Aim Snap" are disabled, but at the same time, when aiming with "RT" from a bow on the "Rogue class" (maybe in other classes same problem to), the sight seems to stick to one of the target and starts tracking him automatically, as like if Aim Snap was enabled. This is very annoying and confused.

Please! Pay attention on this bug, the second patch has already been released, but this problem still not fixed...