What browser are you using? I don't see any of this behavior on Firefox...
Firefox on Windows, but it looks about the same in Edge
Screenshot of the header: https://i.imgur.com/4abfGYF.png
Firefox on Android: 'Google AI' (in app name) is clipped off the top; the Apple 'share' button is clipped on the bottom.
Firefox on Windows, but it looks about the same in Edge
Screenshot of the header: https://i.imgur.com/4abfGYF.png