LateUpdate not working properly for UI Text rotation

I am using the standard LateUpdate code to make text always face the Camera. Text correctly faces camera

   void LateUpdate()
         {
             transform.LookAt(cameraToLookAt.transform);
             transform.rotation = Quaternion.LookRotation(cameraToLookAt.transform.forward);
         }

The text is under a Canvas that is attached to my Player GameObject. When I turn my player using the following code that is called from within a Coroutine, around half of the time the text glitches out for a frame and looks something like this before returning to normal: Not facing camera

     public void TurnTowardsTarget(Vector3 position)
     {
         Vector3 direction = position - transform.position;
         Quaternion rot = Quaternion.FromToRotation(Vector3.forward, direction);
         transform.rotation = Quaternion.Euler(transform.rotation.eulerAngles.x, rot.eulerAngles.y, transform.rotation.eulerAngles.z);
     }

I don't understand why this is happening, and why it doesn't happen every time. I have no other LateUpdate methods in my project, so I don't see how this could be a script execution error unless Coroutines are known to mess with LateUpdate.