I have enabled Navigation Search. The search icon appears. Clicking it in Desktop mode does nothing. Tablet and Mobile it works. I’m guessing it has something to do with the menu but not sure what to change. Any advice?
Thanks @Leo. It was the Sticky Menu (or Anything!) plugin from Mark Senff. I had Legacy Mode selected to prevent it from doing strange things when resizing the browser window. Turning this off now means the search works, but the resizing of the browser window doesn’t. I know there is a feature in GP to make the navigation sticky, but I’d really prefer to make the whole header sticky. Do you know how I can do this?