gwt - When uploading multiple files at once, only one progress bar is shown -

when select multiple files @ once (image1 , image2) see 1 progressbar follows :

my upload widget looks

 uploader = new uploader();  uploader.addonfinishuploadhandler(uploadhandler);  uploader.avoidrepeatfiles(true);  uploader.setautosubmit(true);  uploaderpanel.add(uploader);  progressbar = new modaluploadstatus();  uploader.setstatuswidget(progressbar); 

and in serverside i'm not using custom servlet. suggestions ?

i'm using gwtupload 1.0.1 gwt 2.4.0

edit

it seems uploader uploading 2 files bundle. here log i'm getting during upload :

info: server response transferred  14/1407 [image1.jpg, image2.jpg] info: server response transferred  14/1407 [image1.jpg, image2.jpg] info: mon jun 01 10:39:55 edt 2015 gwt client uploader info: server response transferred  26/1407 [image1.jpg, image2.jpg] info: server response transferred  26/1407 [image1.jpg, image2.jpg] info: mon jun 01 10:39:55 edt 2015 gwt client uploader info: server response transferred  33/1407 [image1.jpg, image2.jpg] info: server response transferred  33/1407 [image1.jpg, image2.jpg] info: mon jun 01 10:39:56 edt 2015 gwt client uploader info: server response transferred  44/1407 [image1.jpg, image2.jpg] info: server response transferred  44/1407 [image1.jpg, image2.jpg] info: mon jun 01 10:39:56 edt 2015 gwt client uploader info: server response transferred  52/1407 [image1.jpg, image2.jpg] info: server response transferred  52/1407 [image1.jpg, image2.jpg] info: mon jun 01 10:39:57 edt 2015 gwt client uploader info: server response transferred  63/1407 [image1.jpg, image2.jpg] info: server response transferred  63/1407 [image1.jpg, image2.jpg] info: mon jun 01 10:39:57 edt 2015 gwt client uploader info: server response transferred  70/1407 [image1.jpg, image2.jpg] info: server response transferred  70/1407 [image1.jpg, image2.jpg] info: mon jun 01 10:39:58 edt 2015 gwt client uploader info: server response transferred  81/1407 [image1.jpg, image2.jpg] info: server response transferred  81/1407 [image1.jpg, image2.jpg] info: mon jun 01 10:39:58 edt 2015 gwt client uploader info: server response transferred  89/1407 [image1.jpg, image2.jpg] info: server response transferred  89/1407 [image1.jpg, image2.jpg] ...