field on form's fieldset have no description when opening window

I use some form on tab panel with field description and allright

OT56zcN.png

But when I use this form on window that's doesn't work

mn6UVqC.png

What is wrong?

Window definition:

Code:

Ext.define('Project.view.d988.mkd.profile.generalMeeting.Add', {
    extend: 'Project.AbstractWindow',
    alias: 'widget.d988GeneralMeetingsAddWindow',
    title: 'Добавление сведений о проводимых общих собраниях собственников',
    resizable: false,
    modal: true,
    autoShow: true,
    requires: [
        'Project.ux.grid.PagingToolbarResizerExt',
        'Project.view.d988.mkd.profile.generalMeeting.AddForm'
    ],
    checkedData: {},
    parentGrid: null,
    autoScroll: false,
    closeAction: 'destroy',
    plugins: ['permission'],


    initComponent: function () {
        var me = this;


        Ext.apply(me, {
            tbar: {
                ui: 'footer',
                items: [
                    {
                        text: 'Сохранить',
                        handler: function () {
                            me.saveForm();
                        }
                    },
                    '->',
                    {
                        text: 'Отмена',
                        handler: function () {
                            me.close();
                        }
                    }
                ]
            },
            items: [
                {
                   xtype: 'd988ProfileCardOverhaulOverview'
                }
            ]
        });


        me.callParent(arguments);
    },


    saveForm: function () {
        var me = this;
    }
});

field on form's fieldset have no description when opening window