You should not use a hidden destination field but use $form['#redirect'].
http://api.drupal.org/api/drupal/developer--topics--forms_api_reference....
This was driving me crazy, i could not figure out why it would not redirect to where i wanted it to but then i saw that you use a hidden field.
Comments
Comment #1
nancydruHow about a patch?
Comment #2
Michsk commentedi have never made a patch. i can alter the files and from there you maybe could make a patch?
Comment #3
nancydruAt least give me a hint and where this "hidden" field is.