Using Animation Rigging on a Humanoid works fine at runtime, but does not evaluate in AW or Timeline Preview mode.
This is expected to work in when using a Humanoid avatar.

Repro:
- Open attached project
- Open Package Manager…
- “Show preview packages” in Advanced pull-down
- Install “Animation Rigging” package

- Open LegIK scene
- Click the Editor Play (runtime) button
- Select the red IK box in the scene window and move it… leg moves as expected.
- Stop runtime
- Open AW
- With red effector still selected…
- Activate Preview mode
- Move red effector in the scene window…
Bug: leg does not move.
Expected: leg should follow effector exactly like expected runtime result.

This bug is an injection.