Varus Visual Bug
So this happens to me, my friends and random people in game. Unlike the Graves bug, this is gamebreaking.
Whenever there is an enemy Varus in the game, this happens. When he starts his Q windup it seems normal. However, he will not move at all. When he fires his Q he will "teleport" to that location. Any skillshots fired at where he actually appears on your screen will not hit him, basically making him have a Wukong W whenever he Q's.
Very annoying. Has got me killed on VarIOus occasions. Behehehe.