Instagram icon not appearing in footer

[catileptic]

From the admin panel (/admin) , from Settings > Global settings > Configuration settings > Instagram handle, I configure the URL that I intend to display in the footer section, attached to an Instagram icon. This functionality works as expected to Facebook, Youtube, Telegram but adding a URL to the Instagram handle and pressing Update does not have the effect of adding that icon to the footer.

Note: after you paste the URL in the input box, press Update. There is no global Update button at the end of the page - each setting is updated individually.