In my project I have an animator with a humanoid avatar, and the controller is just a regular blend tree with walking animations in different directions.
When I use Rig Builder, and have a Rig Layer object with two children, each with a two bone IK constraint, the animations become significantly distorted. In addition, there is a message “Binding Warning: Some generic clip(s) animate transforms that are already bound by a Humanoid avatar. These transforms can only be changed by Humanoid clips”.
If I deactivate the Rib Builder script, the warnings go away, animations are played as normal, but I lose the IK constraints.
What can I do to get the animations to play properly with the two IK constraints?
Edit: Upon further experimenting, it seems that this is working fine as long as I use either the original rig and model that came with the animations, or a re-import from Blender of that rig and model, but not other rigs and models.
Second edit: Even doing this, it does not work with mixamo animations