Unable to get mouse or key events in ExecuteInEditMode

Hello, I would like to get mouse (and keys) event in Editor mode in real time. I've tried three different ways and none of them works. I must be missing something obvious. Can someone help ? In the following code, the logs are never displayed (only the Update - OnGUI when I leave then go back to Unity editor window.

Thanks by advance for any help (the following script is attached to a game object in an empty scene with only camera and light).

 using System.Collections;
 using System.Collections.Generic;
 using UnityEditor;
 using UnityEngine;
 
 [ExecuteInEditMode]
 public class EventTest : MonoBehaviour
 {
     [HideInInspector] public Vector3 mousePosition = new Vector3();
     [HideInInspector] public bool wasClickedOnGUI = false;
     [HideInInspector] public bool wasClickedCustom = false;
 
     // Start is called before the first frame update
     void Start()
     {
 
     }
 
     // Update is called once per frame
     void Update()
     {
        if (Input.GetMouseButtonDown(0))
         {
             Debug.Log("Update - Input - click bt0" + Input.mousePosition.x + ", " + Input.mousePosition.y);
         }
 
         if(wasClickedOnGUI)
         {
             Debug.Log("Update - OnGUI - click bt0 " + mousePosition.x + "," + mousePosition.y);
             wasClickedOnGUI = false;
         }
 
         if (wasClickedCustom)
         {
             Debug.Log("Update - Custom - click bt0 " + mousePosition.x + "," + mousePosition.y);
             wasClickedCustom = false;
         }
     }
 
     void OnGUI()
     {
         Event e = Event.current;
         if (e.isMouse)
         {
             if (e.type == EventType.MouseDown && e.button == 0)
             {
                 wasClickedOnGUI = true;
                 mousePosition.x = e.mousePosition.x;
                 mousePosition.y = e.mousePosition.y;
 
                 e.Use();
                 Debug.Log("OnGUI - click bt0 " + mousePosition.x + "," + mousePosition.y);
             }
         }
     }
 }
 
 
 [CustomEditor(typeof(EventTest))]
 public class EventTestEditor : Editor
 {
     SerializedProperty lookAtPoint;
 
   
     public void OnSceneGUI()
     {
         Event e = Event.current;
         if (e.isMouse)
         {
             if (e.type == EventType.MouseDown && e.button == 0)
             {
                 EventTest evt = (EventTest)target;
                 evt.wasClickedCustom = true;
                 evt.mousePosition.x = e.mousePosition.x;
                 evt.mousePosition.y = e.mousePosition.y;
 
                 e.Use();
                 Debug.Log("CustomEditor - click bt0 " + evt.mousePosition.x + "," + evt.mousePosition.y);
 
             }
         }
     }
 }

Note: also posted the question here but did not have any answer: Unity Forum : Unable to get mouse or key events in ExecuteInEditMode