Moving objects diagonally with the CharacterController.Move command

Hello there. I've been working on an AI that should be able to move diagonally to a position without having the CharacterController to look at it. Meaning GameObject.transform.forward should not need to point in the direction of the desired location.

 void MoveObjectReversed(AIOwnerGameObject owner, Vector3 toPosition)
     {
         Vector3 moveDirection = Vector3.zero;
 
         // Direction to move.
         // Owner - gameObject with some more features
         // owner.movementSpeed - float
         // IgnoreY(Vector3) - removes the y value
         moveDirection = (IgnoreY(toPosition - owner.position)).normalized * owner.movementSpeed;
 
         // Apply gravity
         // owner.gravity - Vector3
         moveDirection += owner.gravity;
 
         // Move the controller
         owner.controller.Move(moveDirection * Time.deltaTime);
     }

Edit: I discovered the problem. It have nothing to do with this code. It's working as intended :)