ExtJS 2 region's sizes change (setWidth/setHeight)

[betazold]

var w = new Ext.Window({    
    layout: 'border',
    title: 'test',
    width: 500,
    height: 400,
    items: [
        { html: '1', title: 'left', width: 200, region: 'west' },
        { html: '1', title: 'center', region: 'center' }    
    ]
});
w.show();
setTimeout(function() {
     var p = w.layout.west.panel;
     console.log(p);
     p.setWidth(400);
     w.doLayout();
     console.log('test finished');
}, 1000);