Help please. Ragdoll works great until I set bones to Kinematic!

This is what’s happening. I am trying to implement the new physical animation system, but whenever I apply Kinematic to the bones below the pelvis, I get this stretching effect on the bones above.


I also have a short video explaining my issues further:

Thank you!

I have an idea that it might be because I have my root bone set to the pelvis. I’ll try adding another bone at the base of the skeleton for the root. This would make sense I guess.