Description of Problem:
 can not display the correct view when customizing current view in mail area

Steps to reproduce the problem:
1.Click a mail folder(for example, Local Folders->Inbox) 
2.Right click on the head of mail area, and select "Customize Current View" 
3.Click the "Fields Shown" button in the "Customize Current View" dialog
4.Select a item(such as "Size") in the left box and click "add".
5.Back to the mail area after clicking "ok" twice.

Actual Results:
  If select adding "Size" item in "Fields Shown" dialog, after back to the
mail area, "To" field is shown but not "Size" field.

Expected Results:
  "Size" field is shown in the new view of mail area.

How often does this happen? 
  Always.

Additional Information: