After making a change to whether something should appear in the menubar, like so (for example):
defaults write "org.pqrs.Karabiner" 'isStatusbarEnable' -bool true
I see no change. Nothing shows up, despite the fact that experimentation shows the preferences were correctly updated, in the same way they would be by a manual change in a preference pane or window. Lots of sites suggest
killall -KILL SystemUIServer
to reload the "widgets" on the right side of the menu, but this does absolutely nothing. The widgets (in the example above, Karabiner) do not show up.
How can I refresh the menu bar so that everything that is supposed to show up according to preferences does show up?