Bug with trying to place objects in a manner similar to Cities: Skylines in game - spawned object keeps moving towards camera before placing.

I am aware that version conflicting may have something to do with this, but I'm not entirely sure. I am using code from this website:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;

 public class GroundPlacementController : MonoBehaviour
 {
     [SerializeField]
     private GameObject placeableObjectPrefab;

     [SerializeField]
     private KeyCode newObjectHotkey = KeyCode.A;

     private GameObject currentPlaceableObject;

     private float mouseWheelRotation;

     private void Update()
     {
         HandleNewObjectHotkey();

         if (currentPlaceableObject != null)
         {
             MoveCurrentObjectToMouse();
             RotateFromMouseWheel();
             ReleaseIfClicked();
         }
     }

     private void HandleNewObjectHotkey()
     {
         if (Input.GetKeyDown(newObjectHotkey))
         {
             if (currentPlaceableObject != null)
             {
                 Destroy(currentPlaceableObject);
             }
             else
             {
                 currentPlaceableObject = Instantiate(placeableObjectPrefab);
             }
         }
     }

     private void MoveCurrentObjectToMouse()
     {
         Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition /* + (Vector3.up * 10)*/);

         RaycastHit hitInfo;
         if (Physics.Raycast(ray, out hitInfo))
         {
             currentPlaceableObject.transform.position = hitInfo.point;
             currentPlaceableObject.transform.rotation = Quaternion.FromToRotation(Vector3.up, hitInfo.normal); // stop rotation
         }
     }

     private void RotateFromMouseWheel()
     {
         Debug.Log(Input.mouseScrollDelta);
         mouseWheelRotation += Input.mouseScrollDelta.y;
         currentPlaceableObject.transform.Rotate(Vector3.up, mouseWheelRotation * 10f);
     }

     private void ReleaseIfClicked()
     {
         if (Input.GetMouseButtonDown(0))
         {
             currentPlaceableObject = null;
         }
     }
 }

I presume the website is using an older version of Unity3D than mine (I'm working with 2019.2.5f1) and that may factor into it, but I'm not sure.

When I use this script, the behaviour in the attached image occurs. The accompanying YouTube video on the website I got the code from does not have that issue, and that is something I wish to replicate.

So far, my workaround is to modify the MoveCurrentObjectToMouse() function, so that currentPlaceableObject.transform.position = hitInfo.point + (Vector3.forward * 1);. This helps prevent the sphere from moving closer to the camera, but this does mean that object placement is less intuitive. I wonder what solutions you are able to provide.