@ -368,7 +368,7 @@ public class MainDesigner extends BaseDesigner {
@Override
protected void upButtonClickEvent() {
JTemplate<?, ?> jt = HistoryTemplateListCache.getInstance().getCurrentEditingTemplate();
if (jt == null) {
if (jt == null || jt.isSaving()) {
return;
}
WebPreviewUtils.preview(jt);