Only kcmgtk-xdg.desktop need be installed (into share/applications/kde). The install routine also installs kcmgtk.desktop (into share/applnk/Settings/LookNFeel), which causes the KDE control center to have a double entry for GTK Look & Feel. So the applnk entry now gets removed at post-install (applnk is deprecated anyway).
Responsible Changed From-To: freebsd-ports-bugs->rafan Eat.
State Changed From-To: open->closed Committed. Thanks!