You can click on [4] which brings you to the footnote and when done you can just use the back button which brings you back to [4] in the text. Works for me.
Sadly some of us (including me) have forcibly unlearned this method after discovering that too many combinations of browsers and webpages don't support this reliably.
Having to manually scroll or search back to where one was reading after clicking an intra-page link and finding out that the back button doesn't work or navigates to somewhere unexpected is just too annoying in the long run.