Issue with navigation bloc

My issue is the navigation bar turns into a hamburger when viewed in desktop. This occurs in browser preview as well as the live site. As you can see from the screen shot I have hamburger turned off. I suspect the menu items and the “company name” are overlapping but I can’t see how to change the height of the menus to avoid a clash. Any help would be appreciated.!

OK I have eliminated any potential offending texts with a clean menu only (deleted the logo) - see screen shot. but I still get the hamburger in preview.

Well I gave up - saved each page as a template and created new pages from them in a new file

fyi. suddenly have the same problem. i was editing the “mobile” version of a site and somehow once i change to the “desktop” site, the hamburger suddenly appeared and cannot change it back.