Mobile menus display all pages

I’m developing a new site and when I look at the menus on either a desktop or tablet, they display ok. When I look on a phone, the menu shows all the pages that I’ve created on the website, not just the ones I’ve selected for the menus. I’ve done the following:
– Deleted browser history
– Verified auto add pages is off
– Tried creating a custom menu and made that the default
– Tried changing to a different theme

What am I missing?

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