HELP - Z-Index + overlay interaction bugging out

Tablet and below NavBar interaction is bugging out when viewed on an iPhone.

I’ve created a custom Nav overlay menu that opens on click (and made it a symbol), however there’s something happening with the z-index on certain pages of the site…

Home Page: NOT WORKING—when nav is opened on iPhone the logo and button disappears behind the overlay

Contact Page (‘Lets Talk’): IS WORKING—when nav is open on iPhone, logo and button remain visible on top of overlay

Could this just be a device bug? Everything looks fine in the designer and in Preview?

Here is my public share link: (Webflow - Blue Sky IT Consulting)