Why my menu tab title repeats in mobile view?

The top and bottom navigation have independent title. So if you previously have used one of the navigation bar and have switch to a different one, you will see the title repeat in mobile view. If this is happening to you, simply go back to your previous navigation bar position and DELETE the title inside the tabs. Then set your theme back to the new navigation position you want. Once you are done, re-publish your site for the change to take effect.