Rotating bug in Project Boost

// in CameraRotator.cs
public class CameraRotator : MonoBehaviour
{
    [SerializeField] float speed;

    // Update is called once per frame
    void Update()
    {
        Debug.Log("Rotating");
        transform.Rotate(0, speed * Time.deltaTime, 0);
    }
}

// in GameManager.cs
public void ReturnToMenu()
    {
        SceneManager.LoadScene("Main Menu");
    }