修复了一些代码上的漏洞与预制体上的错误

Convention/[Visual]/UIComponent/Variant/HierarchyWindow/HierarchyItem.cs

@@ -43,7 +43,7 @@ namespace Convention.WindowsUI.Variant
         }
         private void OnDestroy()
         {
-            if (InspectorWindow.instance.GetTarget() == target)
+            if (InspectorWindow.instance != null && InspectorWindow.instance.GetTarget() == target)
             {
                 InspectorWindow.instance.ClearWindow();
             }
@@ -64,11 +64,13 @@ namespace Convention.WindowsUI.Variant
         [Content]
         public void OnFocusHierarchyItem()
         {
-            if (target == null)
+            if (target != null)
             {
-                throw new InvalidOperationException("target is null");
+                if (InspectorWindow.instance != null)
+                {
+                    InspectorWindow.instance.SetTarget(target, this);
+                }
             }
-            InspectorWindow.instance.SetTarget(target, this);
             if (!IsEnableFocusWindow)
                 return;
             if (FocusWindowIndictaor.instance != null)

Convention/[Visual]/UIComponent/Variant/PropertiesWindow.cs

@@ -313,8 +313,12 @@ namespace Convention.WindowsUI.Variant
                 }
                 static IEnumerator Adjuster2(RectTransform rectTransform, ItemEntry parentEntry)
                 {
+                    if (rectTransform == null)
+                        yield break;
                     LayoutRebuilder.ForceRebuildLayoutImmediate(rectTransform);
                     yield return null;
+                    if (rectTransform == null)
+                        yield break;
                     RectTransformExtension.AdjustSizeToContainsChilds(rectTransform);
                     yield return null;
                     parentEntry.ForceRebuildLayoutImmediate();
@@ -364,6 +368,8 @@ namespace Convention.WindowsUI.Variant
                     ForceRebuildLayoutImmediate();
             }
 
+            public bool IsRemovingChilds { get; private set; } = false;
+
             public void Release()
             {
                 if ((parentWindow == null && parentEntry == null) || childs == null || rootWindow == null)
@@ -376,21 +382,18 @@ namespace Convention.WindowsUI.Variant
                     ref_value.gameObject.SetActive(false);
                     Destroy(ref_value.gameObject);
                 }
+                IsRemovingChilds = true;
                 foreach (var item in childs)
                 {
                     item.Release();
                 }
+                IsRemovingChilds = false;
                 if (parentWindow != null)
                     parentWindow.m_Entrys.Remove(this);
-                else
+                else if (GetParent().IsRemovingChilds == false)
                     parentEntry.childs.Remove(this);
                 ref_value = null;
             }
-
-            ~ItemEntry()
-            {
-                Release();
-            }
         }
         public interface IItemEntry
         {