Defect in EasyUploads Vaadin Add-on

I am using easyuploads 7.0.1 vaadin addon for multi-file upload. Drag and drop upload is working fine but when I click on upload button and use OS browse file window to select files to be uploaded, two browse file windows open up on browsers other than Firefox (i.e. Chrome, Safari, etc.)
Please validate whether this is a valid defect and hoping to have a fix for it.