CHART-11852 CHART-11634改出来的问题，条件属性的标签没有parentPane

designer-chart/src/main/java/com/fr/van/chart/designer/style/label/VanChartPlotLabelDetailPane.java

@@ -185,8 +185,10 @@ public class VanChartPlotLabelDetailPane extends BasicPane {
         positionPane.setLayout(new BorderLayout());
         positionPane.add(getLabelPositionPane(comps, row, col), BorderLayout.CENTER);
 
+        if (parent != null) {
             parent.initListener(positionPane);
         }
+    }
 
 
     protected JPanel getLabelPositionPane (Component[][] comps, double[] row, double[] col){