I'm trying to extend the new List component in Sencha Touch 2.1 (I'm using RC2) and I can't seem to change the item template dynamically. I'd like to be able to change item templates by pressing a button, but it won't work. It used to work in version 2.0.1. Is there anything I'm missing?

Calling setItemTpl() works in the initialize method, but not in edit() or editCompleted() methods.

Here is the test code I have using.

Code:
    Ext.application({
        name: 'SenchaTest',
        launch: function () {


            var app = this;


            Ext.define('TestModel', {
                extend: 'Ext.data.Model',
                config: {
                    fields: [
                        {name: 'field1'},
                        {name: 'field2'},
                        {name: 'field3'},
                    ]
                }
            });


            Ext.define('Stx.dataview.MyList', {
                extend: 'Ext.dataview.List',


                config: {
                    normalTpl: null,
                    editTpl: null,
                    editing: false,
                    scrollToTopOnRefresh: false,
                },


                initialize: function () {
                    this.callParent();
                    this.setItemTpl(this.getNormalTpl());
                },


                edit: function () {
                    if (!this.getEditing()) {
                        this.setEditing(true);
                        this.setItemTpl(this.getEditTpl());
                    }
                },


                editCompleted: function () {
                    if (this.getEditing()) {
                        this.setEditing(false);
                        this.setItemTpl(this.getNormalTpl());
                    }
                },
            });


            this.store = Ext.create("Ext.data.Store", {
                model: 'TestModel',
                data: [
                    {field1: "data1Field1", field2: "data1Field2", field3: "data1Field3"},
                    {field1: "data2Field1", field2: "data2Field2", field3: "data2Field3"},
                    {field1: "data3Field1", field2: "data3Field2", field3: "data3Field3"},
                    {field1: "data4Field1", field2: "data4Field2", field3: "data4Field3"},
                    {field1: "data5Field1", field2: "data5Field2", field3: "data5Field3"},
                    {field1: "data6Field1", field2: "data6Field2", field3: "data6Field3"},
                    {field1: "data7Field1", field2: "data7Field2", field3: "data7Field3"},
                    {field1: "data8Field1", field2: "data8Field2", field3: "data8Field3"},
                    {field1: "data9Field1", field2: "data9Field2", field3: "data9Field3"},
                    {field1: "data10Field1", field2: "data10Field2", field3: "data10Field3"},
                    {field1: "data11Field1", field2: "data11Field2", field3: "data11Field3"},
                    {field1: "data12Field1", field2: "data12Field2", field3: "data12Field3"},
                    {field1: "data13Field1", field2: "data13Field2", field3: "data13Field3"},
                    {field1: "data14Field1", field2: "data14Field2", field3: "data14Field3"},
                    {field1: "data15Field1", field2: "data15Field2", field3: "data15Field3"},
                ]
            });


            this.button = Ext.create("Ext.Button", {
                text: "Edit List",
                listeners: {
                    tap: function () {
                        if(!app.list.getEditing()) {
                            app.list.edit();
                        } else {
                            app.list.editCompleted();
                        }
                    }
                }
            });


            this.normalTpl = Ext.create("Ext.XTemplate", 
                '{field1}<br/>',
                '{field2}<br/>',
                '{field3}',
            {});


            this.editTpl = Ext.create("Ext.XTemplate", 
                '{field1}',
            {});


            this.list = Ext.create("Stx.dataview.MyList", {
                store: this.store,
                normalTpl: this.normalTpl,
                editTpl: this.editTpl,
                cls: "mylist",
                flex: 1,
            });


            this.panel = Ext.create('Ext.Panel', {
                layout: {type: 'vbox'},
                padding: 10,
                style: "background-color: #555555;",
                items: [
                    this.button,
                    {style: "height: 10px;"},
                    this.list,
                ],
            });


            Ext.Viewport.add(this.panel);
        }


    });