In my game I am trying to have numbered blocks and math operators be able to be dragged down into their respectively color coded holders (white holders = Numbers, black holders = operations). The spawn in color coded blocks called spawners. If you drop a block you were dragging in a space that isn't a holder, then the block would immediately snap back to its respective spawner.

However, I am now encountering this issue where 99% of the time when I drop the block onto its respective holder, the block snaps back to its spawner instead of staying there.

Here's the minimum reproducible code for dragging the blocks:

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

[RequireComponent(typeof(Collider2D))]
public class DragDrop : MonoBehaviour, IDragHandler, IBeginDragHandler, IEndDragHandler
{
    [SerializeField] private SpriteRenderer _spriteRenderer;
    public SpriteRenderer _SpriteRenderer => this._spriteRenderer;
    [HideInInspector]public static bool isInSpace;
    [HideInInspector]public Vector3 initialPos;

    private void Start()
    {
        initialPos = transform.position;
        isInSpace = true;
    }

    public void OnDrag(PointerEventData eventData)
    {

        if (isInSpace == false)
        {
            Vector3 movement = new Vector3(
            x: (eventData.delta.x/3) * Time.deltaTime,
            y: (eventData.delta.y/3) * Time.deltaTime);

            this.transform.localPosition += movement;
        }
    }

    public void OnBeginDrag(PointerEventData eventData)
    {
        isInSpace = false;
    }

    public void OnEndDrag(PointerEventData eventData)
    {
        if (isInSpace == false)
        {
            transform.position = initialPos;
        }
    }

#if UNITY_EDITOR
    private void Reset()
    {
        this._spriteRenderer = this.GetComponent<SpriteRenderer>();
    }
#endif
}

And Here's the code for receiving the blocks:

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

public class RecieveBlock : MonoBehaviour, IDropHandler
{
    public void OnDrop(PointerEventData Block)
    {
        if (Block.pointerDrag != null && Block.pointerDrag.tag == gameObject.tag)
        {
            Block.pointerDrag.GetComponent<RectTransform>().anchoredPosition = GetComponent<RectTransform>().anchoredPosition;
            DragDrop.isInSpace = true;
        }
    }
        
}

I have no idea why it doesn't set off the isInSpace bool to be true and stay there.

Thank you for reading.