korganizer unable to edit categories on to-do items

Binary package hint: korganizer

When trying to edit a category (in a task) or create a new one clicking on the edit categories button does not respond.
According to KDE's bug tracker this has been resolved;

Bug 141136: Category Edit boton in new (or modify) TODO windows don't work

------- Additional Comment #2 From Martin Koller 2007-03-03 17:18 -------
SVN commit 638869 by mkoller:

BUG: 141136

make "Edit Categories" button open the editor again.

 M +3 -0 koeditorgeneral.cpp
 M +3 -0 koeventeditor.cpp
 M +3 -0 kotodoeditor.cpp

--- branches/KDE/3.5/kdepim/korganizer/koeditorgeneral.cpp #638868:638869
 at at -236,6 +236,9 at at
   KPIM::CategorySelectDialog *categoryDialog = new KPIM::CategorySelectDialog( KOPrefs::instance(), mCategoriesButton );
   KOGlobals::fitDialogToScreen( categoryDialog );
   categoryDialog->setSelected( mCategories );
+
+ connect(categoryDialog, SIGNAL(editCategories()), this, SIGNAL(openCategoryDialog()));
+
   if ( categoryDialog->exec() ) {
     setCategories( categoryDialog->selectedCategories() );
   }
--- branches/KDE/3.5/kdepim/korganizer/koeventeditor.cpp #638868:638869
 at at -91,6 +91,9 at at

   connect( mGeneral, SIGNAL( focusReceivedSignal() ),
            SIGNAL( focusReceivedSignal() ) );
+
+ connect( mGeneral, SIGNAL( openCategoryDialog() ),
+ SIGNAL( editCategories() ) );
 }

 void KOEventEditor::reload()
--- branches/KDE/3.5/kdepim/korganizer/kotodoeditor.cpp #638868:638869
 at at -76,6 +76,9 at at
            mRecurrence, SLOT( setDateTimeStr( const QString & ) ) );
   connect( mGeneral, SIGNAL( signalDateTimeChanged( const QDateTime &, const QDateTime & ) ),
            mRecurrence, SLOT( setDateTimes( const QDateTime &, const QDateTime & ) ) );
+
+ connect( mGeneral, SIGNAL( openCategoryDialog() ),
+ SIGNAL( editCategories() ) );
 }

 void KOTodoEditor::reload()

But apparently the bug has not been fixed in the final packages. I don't know how o fix this using the information supplied above.