A while back there was a change made to jabs changing their channel time from 0.92 to 1 second. It may not seem a lot, but it made light attack weaving always be off a little. The reason for the change was that 1 second 'better tied up with the animation'. As far as I am aware, the animation duration is 1.55 seconds and has never changed. I am not sure how 1 s ties up any better to 1.55s, than 0.92s did.
It is a minor thing, and whilst we all have kind of got used to the janky jabs now, if it could be changed back to the previous cast time, it would be greatly appreciated.