setView remove additional style

[GoogleCodeExporter]

Calendar _calendar = new Calendar();
this.addStyleName("my-calendar-look");  
...
weekButton.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                _calendar.setView(CalendarViews.DAY,7);
            }

        });


What is the expected output? What do you see instead?
- add style to calendar
- call  setView method
- the added style has lose..

What version of the product are you using? On what operating system?
0.9.3.1

Thank you for your great job ;)

Original issue reported on code.google.com by [email protected] on 11 Jan 2013 at 7:07