Comment 5 for bug 1026058

Actually, I've just had another look and this bug is still reproducible; however it highlights another problem:
If you delete all the files in ~/.config/menus and ~/.local/share/applications running the menu editor and making any change will create a new ~/.config/menus/applications.menu file with the changes, but these changes are reversed or rather ignored, because the filename is wrong.
Manually renaming ~/.config/menus/applications.menu to xfce-applications.menu results in the changes being applied, but now the submenu Electronics doesn't appear in the menu editor, so a Desktop file with Category Electronics, as for example the one attached in my previous post, cannot, for example, be removed from the Electronics submenu.
Note, you can manually copy and edit a desktop file in ~/.local/share/applications (delete the Electonics entry under Categories) to remove it from the Electronics submenu.
BTW: If you click the help button on the menu editor you get a Document Not Found: The URI ‘ghelp:user-guide?menu-editor#menu-editor’ does not point to a valid page.