They haven’t talked about it at all, the only place it is officially mentioned is the Known Bugs.
I have a bad feeling that the animation itself isn’t really bugged, it’s just that the reload speed increase for DPS has pushed the part of the animation where he reaches back for his next arrow up which looks like “recoil”/jerking upwards
If that’s the case they may be thinking that they need to change the animation.
I’m sure every single Hanzo player would gladly give up the 10% reload speed buff if it fixes this issue.
You could just remove it for Hanzo until you are able to shorten the animation properly.
please 