Collisions are getting ignored in child objects

Character controller on child object not colliding with any object. I have also tried using colliders with and without rigidbody, but still character is not colliding with colliders. It is only colliding if collider or character controller is attached to the parent object containing the root motion animator. Why is that happening? As I want my collider to jump with character and trying to attach the collider with bones but none is colliding too.

You can watch the video too: Collision bug video