Would make more since if this worked on everyone. So how come only Beo, Big Band, and Bella? Do they have something different compared to the rest of the cast when it comes to ground tech? I've tested on everyone else and this only works on those 3.
Yes. Their physical extent boxes are larger in front of their point than everyone's box is behind the point, and they face "backward" during their back tech because of reused frames. So they end up further away from the corner when they turn around to face forward again.