FieldGroup is always binding a readonly ComboBox

Hello guys,

I'm using vaadin version 7.5.10. Now a ComboBox which is bound with a FieldGroup is always read-only. I cant make it not read-only by explicitly setting ComboBox.setReadOnly(false).

Simple code snippet:
     

FieldGroup f = new FieldGroup(partnerItem);

  ComboBox cb = new ComboBox();
  f.bind(cb, "partnerType");
        
  Window w = new Window("For check");
  w.setHeight("300px");
  w.setWidth("300px");
  w.setContent(cb);
  cb.setReadOnly(false);

  UI.getCurrent().addWindow(w);

This wasn't happened before :(
Any help will be appreciated :).
 

Dou you have setter for partnerType property in your Partner dto?

Yes I've. But the dataType of the value wasn't same;

Before change:

public void setPartnerType(int partnerType) {
      this.partnerType = partnerType;
}

After change :

public void setPartnerType(Integer partnerType) {
      this.partnerType = partnerType;
}

Where partnerType is Integer. Btw after the change its work.
Thanks a lot.