Xfce 4.12 on Fedora 22 (alpha) does not display icons for appfinder and "run program" (xfce4-appfinder --collapsed), I believe, due to changes in GTK.

The "offending" issues are in the desktop files - 

xfce4-appfinder.desktop
xfce4-run.desktop

corresponding to lines

Icon=gtk-find
Icon=gtk-execute

respectively.


The lines below _should_ fix the issue.

sed -i 's/gtk-find/edit-find/g' data/xfce4-appfinder.desktop.in
sed -i 's/gtk-execute/system-run/g' data/xfce4-run.desktop.in