How to reproduce: 
1. Open KOrganizer. 
2. Make sure that you have at least one todo entry. 
3. Select one todo entry. 
4. In the box below the todo list a todo page appears. 
5. Select any piece of text in the todo page. 
6. Press your copy shortcut, for me it's Ctrl-C. 
7. If you look at Klipper's memory, you see: 
BEGIN:VCALENDAR PROD...:VTODO END:VCALENDAR 
and if you try to paste in some app (e.g. KWrite), you get nothing. 
8. If you do the same, but copy by context menu instead of by hotkey, 
everything works perfectly fine. 
 
Expected behavior: 
Copy the selected text normally regardless of copying method.