GraphicRaycaster.Raycast doesnt work properly while executing OnEndDrag(...)

Hey. My problem depends on not properly Raycasting UI.

 public void OnEndDrag(PointerEventData eventData)
    {
        //Code to be place in a MonoBehaviour with a GraphicRaycaster component
        GraphicRaycaster gr = this.GetComponent<GraphicRaycaster>();
        //Create the PointerEventData with null for the EventSystem
        PointerEventData ped = new PointerEventData(null);
        //Set required parameters, in this case, mouse position
        ped.position = Input.mousePosition;
        //Create list to receive all results
        List<RaycastResult> results = new List<RaycastResult>();
        //Raycast it
        gr.Raycast(ped, results);

      

        foreach (RaycastResult result in results)
            {
                Debug.Log("Hit " + result.gameObject.name);
            }


        GameObject panel = transform.Find("Panel").gameObject;
        if (panel)
            panel.transform.localPosition = Vector3.zero;
    }

It raycasts only 1 gameobject,that one which i drag. For example if I drag BP Slot (1) and drop on BP Slot(2) it raycasts only BP Slot (1). I want to make Inventory with drag and drop system.

Strange fact is while im execute that code in void Update() it raycasts properly…
What is going on ?

Ok, SOLVED
I deleted GraphicRaycaster from BP Slots and RaycastTarget from Panel (BP Slot’s child).