Dataview scroll go back to the top

Hi,

I'm using Sencha Touch 2.3.0 for an application made with Cordova.

On some phone, a dataview can't scroll: after releasing the screen, the list scrolls back to the top.

But on some other phone, the scroll works well.

Code:

Ext.define('app.view.listeAniContainer', {    extend: 'Ext.Panel',
    alias: 'widget.listeAniContainer',


    config: {
        docked: 'top',
        height: '100%',
        itemId: 'listeAniCtn',
        items: [
            {
                xtype: 'dataview',
                docked: 'top',
                height: '100%',
                itemId: 'listeAni',
                defaultType: 'listeanidataitem',
                useComponents: true,
                items: [
                    {
                        xtype: 'toolbar',
                        docked: 'top',
                        height: '10%',
                        itemId: 'searchAniToolbar',
                        items: [
                            {
                                xtype: 'numberfield',
                                itemId: 'searchAniField',
                                width: '100%',
                                name: 'searchAniField'
                            }
                        ]
                    }
                ]
            }
        ]
    }


});

The container "listeAniContainer" is a card in a container (with card layout).

How can be sure to have the scroll on the dataview?

thx

Dataview scroll go back to the top