I can confirm the same behaviour (new items appear in "Other") on Fedora
20 with XFCE4:
xfce4-panel-4.10.1-3.fc20.x86_64
alacarte-3.10.0-1.fc20.noarch
gnome-menus-3.10.1-1.fc20.x86_64
The trouble I am having is that the .desktop file is created by alacarte
but the ~/.config/menus/xfce-application
I have just upgraded to alacarte-3.11.91-1.fc21 (installed locally by
downloading the RPM from the Rawhide repository) and the issue is now
fixed. It seems the solution is just to update alacarte to the latest
version. From the alacarte 3.11.91 changelog:
Changes:
Drop Help button
