When using Lighthouse to inspect a site using the filter options, it is giving the following accessibility error:

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

I believe this is because you have both role=”menubar” and role=”menu” and only one of these is needed as both require menuitem as children – menu is not a valid child of menubar. I also think the role menuitem belongs on the link (<a>) and not the list item (<li>). Reference: https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/Roles/menu_role.
UPDATE: Team confirmed. Fix released in 7.9.