then go to the settings page in the search results.
in the title bar buttons it should show you what all you have assigned up there, and you can see what it’s called and/or remove it, if you don’t need it.
I was confused because it should only be shown if there are multiple desktops. But when using the style “Plastik” it is shown all time, even if there is no second desktop. If I choose the default style (Breeze) it is only visible if there are multiple desktops available…