In Iconbox, XFCE, all OpenOffice applications have the generic OOo icon instead of different icons for the writer / calc / base windows I noticed that if starting an application after staring OpenOffice, the titlebar icon changes from the generic Ooo icon to the icon specific to the application, but the iconbox icon does not. Starting the ap directly, does not fix the iconbox icon.
Devel branch has been merged in master. A 4.7.0 release will follow soon. If you think this bug is not fixed? Feel free to reopen the bug.
Move bug to Window Buttons; the merge of tasklist and iconbox.