REPORT-45880 使用富文本恢复普通文本后文本格式失效

designer-realize/src/main/java/com/fr/grid/selection/CellSelection.java

@@ -592,11 +592,13 @@ public class CellSelection extends Selection {
     //设置显示内容为default
     private void setDefault(CellElement element) {
         CellGUIAttr cellGUIAttr = element.getCellGUIAttr();
+        if (cellGUIAttr != null) {
             cellGUIAttr.setShowAsDefault(true);
             cellGUIAttr.setShowAsHTML(false);
             cellGUIAttr.setShowAsDownload(false);
             cellGUIAttr.setShowAsImage(false);
         }
+    }
 
 
     @Override