Unity UI GraphicRaycaster Not working (GraphicRaycaster.Raycast(PointerEventData, List<RaycastResult>)

Issue:

Raycast()

function of

GraphicsRaycaster

doesn't seem to be working on non interactable objects*.

* It works for buttons which are set to interactable, and it doesn't work with button which aren't interactable. Also, It doesn't with any other UI element.

Issue Details:

• I am trying to get the UI elements via graphics raycast.
• It doesn't with any other UI element expect buttons which are marked as interactable.

More Context:

• I was trying to build a popup which closes when clicked outside of popup area.
• I have got that functionality working on individual panel.
• But, for nested Panels (Panel buttons -> opens -> another Panel with Button) I need to get the UI element which is clicked. Then it could be checked whether that UI element is descendent of the current open Panel element or not.

I'm attaching 2 code files here -

1. GetUiElementRaycast : MonoBehaviour

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using UnityEngine.UI;
5. using UnityEngine.EventSystems;
6.  
7. public class GetUiElementRaycast : MonoBehaviour
8. {
9.     public GameObject currentSelectedUI;
10.     public GraphicRaycaster gRaycast;
11.  
12.     private void Awake() {
13.         gRaycast = GetComponent<GraphicRaycaster>();
14.     }
15.  
16.     private void Update() {
17.         getUiElement();
18.     }
19.  
20.     void getUiElement(){
21.         PointerEventData pEventData = new PointerEventData(EventSystem.current);
22.         pEventData.position = DebugMousePosition.getPointerPosition();
23.         List<RaycastResult> results = new List<RaycastResult>();
24.        
25.         gRaycast.Raycast(pEventData, results); // EventSystem.current.RaycastAll(pEventData,results); <-- Even Tried this
26.  
27.         if(pEventData.selectedObject){
28.             Debug.Log(pEventData.selectedObject+"");
29.         }
30.  
31.         currentSelectedUI = pEventData.selectedObject;
32.     }
33. }
34.  

2. snippet of DebugMousePosition.getPointerPosition()

Code (CSharp):

1. public static Vector3 getPointerPosition(){
2.         Vector3 mousePos = pointerPositionInputAction.ReadValue<Vector2>();
3.         mousePos.z = Camera.main.nearClipPlane;
4.         return Camera.main.ScreenToWorldPoint(mousePos);
5.     }

Scene Setup:




Any guidance is greatly appreciated!