update

designer-base/src/main/java/com/fr/design/mainframe/WestRegionContainerPane.java

@@ -42,10 +42,10 @@ public class WestRegionContainerPane extends UIResizableContainer {
 
                 if (getDownPane() != null) {
                     replaceDownPane(TableDataTreePane.getInstance(DesignModelAdapter.getCurrentModelAdapter()));
-                }
+                } else {
-
                     setDownPane(TableDataTreePane.getInstance(DesignModelAdapter.getCurrentModelAdapter()));
                 }
+            }
         }, new PluginFilter() {
         
             @Override