Ext.form.CompositeField驗證失敗時,背景不正常顯示

在CompositeField要加combineErrors:false這個屬性,否則當ComositeField的item有套用vtype,驗證失敗會造成背景空白

{
 xtype:'compositefield',
 fieldLabel: 'Network',
 combineErrors:false,
 items:[
  {
   xtype:'textfield',
   id:'network',
   emptyClass:'q-form-empty-field',
   emptyText:'172.17.10.0/23',
   enableKeyEvents:true,
   vtype:'networkV',
   listeners:{
    keyup:function(){
     //do something
    }
   }
  },{
   xtype:'checkbox',
   id:'allnetwork',
   boxLabel:'All',
   networkField:'network',
   handler:function(o,checked){
    //do something
   }
  }
 ]
}