In Iclone 7, I could link a Camera to a Character’s Root Bone and it would link the actor’s position to the camera, no rotation.

In Iclone 8, the position and rotation is inherited, so the Camera shows a jerky motion as it is linked to the actor’s position and rotation. I have none selected.

This is new to Iclone 8. There is even a 3rd party tutorial that shows this problem 1:56

https://youtu.be/eeogxVZUOrM

It should work like Iclone 7 or have an option where you select “Link position only”

This can be recreated easily. Load CC3+ character
Load motion
Create Camera
Frame Character with Camera
Link Camera to root bone
Play