Yeah I would test the heck out of this situation as this is what I see too. I almost never have this issue at long ranges, it is always at short range, and the shorter the worse of an issue it is. (In other words if I see somebody charge at me from 20 feet I'll be a bit worried the bug will hit me, but if somebody comes around a corner at 5 feet there is like a 60% chance I will experience it.) But like the quote above says, what I noticed recently is it SEEMS like its not just distance but also how long the target has been on your screen. If I attack somebody at short range but I have had vis on him for 5 seconds the attack will almost certainly hit. If he only came around the corner .02 seconds before I open fire (or vice versa) the bug strikes.