I’m not seeing that, its still attaching to a given component for me and the code is still the first branch ran so it overrides all other options when there is a waist parent.
Also the trackers aren’t removed in 4.17, they are deprecated for removal (I remove them in the 4.18 branch), that being said they might be broken in 4.17, I didn’t see the need to re-vamp them getting the correct device ID yet again since they are no longer useful.
Also I need to change how the waist tracking works soon (have a better solution) as well as merge the foot and snap turning into it. I have those slated for 4.18 as well.