在Unity中使用GetComponent <>（）时无法读取字典

我在GameObjects内部有三个脚本，结构如下：

GameObjectA
└ Script1
GameObjectB
└ Script2
└ Script3

Script3有一个我需要在中回忆的字典Script2：

public void SomeMethod()
{
    Dictionary<string, int> someDictionary;
    someDictionary = gameObject.GetComponent<Script3>().myDictionary;
    //other stuff
}

如果我Script2在其Start方法中调用该方法，它将被正常调用，并且可以毫无问题地读取Dictionary。

然而，代码执行过程中，我有时会需要调用Script2来自Script1：

Public GameObject GameObjectB;
GameObjectB.GetComponent<Script2>().SomeMethod();

而且，如果这样做的话，在执行过程中单步执行代码时，我会发现字典SomeDictionary为空。

这正常吗？如果需要，我可以提供更多信息或真实的摘要，我发现这种行为很奇怪，而且我不知道它是否正常运行。

编辑：下面的真实代码。

脚本1 ，PauseMenu：

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

public class PauseMenu : MonoBehaviour
{
    public GameObject tracksMenuContent;

    public void TracksList()
    {
        tracksMenuContent.GetComponent<PopulateGrid>().Populate();
    }
}

脚本2 PopulateGrid：

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

public class PopulateGrid : MonoBehaviour
{
    [SerializeField] private TileDescr _prefab;
    public static PopulateGrid instance;

    private void Awake()
    {
        Populate();
    }

    public void Populate()
    {
        Dictionary<string, TileSupply> tilesList;
        tilesList = gameObject.GetComponent<TileDB>().tiles30;
        TileDescr newObj; // Create GameObject instance

        foreach (KeyValuePair<string, TileSupply> tile in tilesList)
        {
            Sprite tileSprite = Resources.Load<Sprite>("Tiles/tile" + tile.Key);
            string tileText = "[" + tile.Key + "] " + tile.Value.available + "/" + tile.Value.total;

            newObj = Instantiate(_prefab, transform);
            newObj.Initialize(tileSprite, tileText);
        }
    }
}

Script3 ，TileDB：

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

public class TileSupply
{
    public int available;
    public int total;
}

public class TileDB : MonoBehaviour
{
    public Dictionary<string, TileSupply> tiles30 = new Dictionary<string, TileSupply>();

    public void Awake()
    {
        tiles30.Add("1", new TileSupply() { available = 1, total = 1 });
        //many more elements, all pretty similar
    }
}