The <title> on the page doesn't seem to update when switching from another panel of the settings page to Advanced in particular. The others will consistently update, but then switching to Advanced it just has the title of the last page. If you then hard refresh the page, it will just say Settings | [user] rather than Advanced | [user] as expected.
Was able to reproduce. Pretty minor so I can't confirm that our eng team will prioritize it but I am definitely curious as to why that behavior occurs.
It seems to be scoped to when there are multiple tabs in the Safari browser that the tabs have that short hand description appear.