Reloading iframe after window collapse or expand

Hi guys,

i'm using Ext js 3.4

I create a window with an iframe that load a jsp. When the user Collapse or Expand the window the jsp associated to the iframe is reloaded. Why does it happens?? Is it a Bug?

Is there a way to avoid the reload?

This the code that reproduce the problem:

Code:

               var  win = new  Ext.Window ({
                    id :'testwin'
                    ,title : 'test win'
                    ,width :  700
,height :  450
,border :false
 ,modal :false
 ,constrainHeader :true
 ,collapsible :true
 ,maximizable :true
 ,items : [{
                        xtype  : "component" ,
                        autoEl  : {
                            tag  : 'iframe' ,
                            style : 'width:100%;height:100%;background-color:#DFE8F6;' ,
                            frameborder : 0 ,
                            src  :' test.jsp' 
                        }
                    }]

                });
                win.show();

Best Regards



Reloading iframe after window collapse or expand