- open the attached document
- open the form navigator
- In the form navigator (from the "Form Design" toolbar)
=> you see two logical forms, one bound to the Bibliography's table "biblio", and
   one not bound to a database
- select the "biblio" form
- open the "Add Field" window (from the "Form Design" toolbar)
=> the window displays the fields of the "biblio" table, as expected
- in the form navigator, select the "unbound" form
=> the "Add Field" window does not update itself to this new form - which is
   unexpected. By definition, this window's content follows the current form, else
   the it becomes pretty useless

(workaround: close and re-open the "Add Field" window)