修复表格编辑器的问题

Editor/XTable/XericUIActionTableEditor.cs

@@ -84,12 +84,14 @@ namespace XericUIEditor.XTable
                 {
                     m_Table.FullRebuildPreservingData();
                     m_Table.SetChildrenVisible(m_ShowChildren);
+                    EditorApplication.RepaintHierarchyWindow();
                 }
 
                 if (GUILayout.Button("强制刷新样式", GUILayout.Height(26)))
                 {
                     m_Table.ForceStyleRefresh();
                     m_Table.SetChildrenVisible(m_ShowChildren);
+                    EditorApplication.RepaintHierarchyWindow();
                 }
 
                 EditorGUILayout.Space(4);
@@ -126,6 +128,7 @@ namespace XericUIEditor.XTable
                 {
                     m_ShowChildren = newShow;
                     m_Table.SetChildrenVisible(m_ShowChildren);
+                    EditorApplication.RepaintHierarchyWindow();
                 }
 
                 if (m_ShowChildren)

Runtime/XTable/Rendering/Component/XericUIActionTable.cs

@@ -857,7 +857,8 @@ namespace XericUI.XTable.Rendering.Component
             m_BackgroundGo = new GameObject("_TableBackground",
                 typeof(RectTransform), typeof(CanvasRenderer), typeof(Image));
             m_BackgroundGo.hideFlags = HideFlags.DontSave | HideFlags.HideInHierarchy;
-            m_BackgroundGo.transform.SetParent(rectTransform, false);
+            m_BackgroundGo.transform.SetParent(ContentTransform, false);
+            m_BackgroundGo.transform.SetAsFirstSibling();
 
             RectTransform bgRt = m_BackgroundGo.GetComponent<RectTransform>();
             bgRt.anchorMin = new Vector2(0, 1);