Changing title of the secondary menu as displays on Mobile

I'm having trouble setting the title of the secondary menu as appears on the mobile version. I want the menu title to be "Menu (full display)". But if I have anything but "Home" as the first page in the menu, the menu title will only come up as "Menu" no matter what I do to change the title of the menu in the Customizer. And if I have a page titled "Home", the menu title shows up as "Home". Thanks for the help ahead of time.