ExtJs 4.1.1 Ext.window.Window: frame config behavior change

[jchristen]

Hello,
I was using this code :

Ext.create('Ext.window.Window', {
    height: 100,
    width: 400,
    frame: true,
    closable: false,
    draggable: false
}).show();

which render like this with ExtJs 4.1.0 :
WindowFrame_4.1.0.png
and now like this with ExtJs 4.1.1 :
WindowFrame_4.1.1.png
(same as ExtJs 4.1.0 with "frame: false")

This is a bug or a wanted change ?
Thanks