They fixed one bug with it in their internal playthrough (the one where you can hit people with disengagement attacks from across the map), which was a really simple thing to fix (CanEngageEnemy just needed to check for isMoving) but they missed other issues with it.
The fact that they have overlooked the functional errors with it is a bit disheartening, UI is not the problem with Engagement. I'm not sure why they seem to think that obtuse UI elements will solve all their problems. Seems to be a common fallback for them when they're having a mechanical or animation problem.
So yes, that thread will be coming sometime soon I guess.