Sorry for the mess but i looked into it a bit more and i must apologize because it seems i have misunderstood the situation. I do not think attack move is broken any more at least not in a mechanical way (balance wise i still think it is). It actually simply works too well 11. In this video here i compare it to stop micro and patrol micro which are the two other ways of microing archer units without focus firing. These have some drawbacks which makes their method slightly inefficient compared to attack move, they both do not fire instantely after the command is given (a delay seperate from their frame delay).
So i am not sure if this should still be considered a bug or more a balance issue. Although i would still argue that patrol should also instantely pick targets like the attack move does as i have noticed this not happening before. Somehow patrolled units do not find their targets with the same speed as attack move.
