Panel Close Action销毁所有标签

Question

我有两个打开的标签，如下所示：

在底部有一个iframe（面板），但当我关闭一个时，其他标签消失：

得到了这个错误：

未捕获的TypeError：无法读取属性＆＃39; parentNode＆＃39;未定义的

观看代码：

Ext.define('tls.modulos.repservfact.view.Reporte', {
extend: 'Ext.panel.Panel',
iconCls: 'icon-report',
alias: 'widget.reporte',
closeAction: 'destroy',
name: 'tbReportes',
layout: {
    type: 'border'
},
title: 'Resumen Servicios Facturados',
region: 'north',
flex: 1,
initComponent: function() {
    var me = this;

    var storeGenCar = Ext.create('tls.modulos.repservfact.store.Empresa');
    storeGenCar.proxy.extraParams = {IdTipoEmpresa: 'GenCar'};
    storeGenCar.load();

    var storeTransp = Ext.create('tls.modulos.repservfact.store.Empresa');
    storeTransp.proxy.extraParams = {IdTipoEmpresa: 'Transp'};
    storeTransp.load();

    var storeTipoCarga = Ext.create('tls.modulos.repservfact.store.TipoCarga');
    storeTipoCarga.load();

    Ext.applyIf(me, {
        items: [
            {
                xtype: 'form',
                region: 'center',
                layout: 'column',
                bodyPadding: 10,
                defaults: {
                    width: 300,
                    padding: 2
                },
                items: [
                    {
                        xtype: 'datefield',
                        format: 'Y-m-d',
                        showToday: true,
                        fieldLabel: 'Fecha Inicial',
                        name: 'FechaInicial',
                        editable: false,
                        allowBlank: false
                    },
                    {
                        xtype: 'datefield',
                        format: 'Y-m-d',
                        showToday: true,
                        fieldLabel: 'Fecha Final',
                        name: 'FechaFinal',
                        editable: false,
                        allowBlank: false
                    },
                    {
                        xtype: 'combo',
                        store: storeGenCar,
                        name: 'cmbGenCar',
                        fieldLabel: 'Generador de Carga',
                        displayField: 'RazonSocial',
                        valueField: 'IdEmpresa',
                        editable: false,
                        labelWidth: 130
                    },
                    {
                        xtype: 'combo',
                        store: storeTransp,
                        name: 'cmbTransp',
                        fieldLabel: 'Transportadora',
                        displayField: 'RazonSocial',
                        valueField: 'IdEmpresa',
                        editable: false
                    },
                    {
                        xtype: 'textfield',
                        name: 'txtPlaca',
                        fieldLabel: 'Placa'
                    },
                    {
                        xtype: 'combo',
                        store: storeTipoCarga,
                        name: 'cmbTipoCarga',
                        fieldLabel: 'Tipo de Carga',
                        displayField: 'ValorParametro',
                        valueField: 'IdValorParametro',
                        editable: false
                    },
                    {
                        xtype: 'textfield',
                        name: 'txtProducto',
                        fieldLabel: 'Producto'
                    }

                ],
                buttons: [
                    {
                        xtype: 'button',
                        name: 'btnMostrar',
                        text: 'Ver Reporte',
                        formBind: true
                    },

                    {
                        xtype: 'button',
                        name: 'btnExcel',
                        text: 'Exportar a Excel',
                        formBind: true,
                        iconCls: 'icon-xls'
                    },

                    {
                        xtype: 'button',
                        name: 'btnPDF',
                        text: 'Exportar a PDF',
                        formBind: true,
                        iconCls: 'icon-pdf'
                    },
                    {
                        xtype: 'button',
                        name: 'btnBorrar',
                        formBind: true,
                        text: 'Borrar'
                    }

                ]

            },
            // This is the panel for iframe.
                            {
                xtype: 'panel',
                region: 'south',
                height: '80%',
                html: '',
                name: 'ifReporte',
                id: 'ifReporte'
            }

        ]
    });
    me.callParent(arguments);
}

}）;

如果删除iframe面板，则效果很好。但我需要它来显示一份报告。 一些帮助？