Link highlighting not updated if link accessed directly

Hello – I hope that the message makes sense.

I really like this plugin. I discovered it at https://owl.excelsior.edu

Now. When I click on a link, I am taken to the appropriate page and the link is highlighted (with an underline). HOWEVER, if I access a page by some other means, e.g. by copying the page’s URL into the browser, I am taken to the page but the menu is not updated.

I wonder if there is a setting to make the correct highlighting happen without writing any code. I say this because the version of the menu used in the excelsior URL listed above does update automatically.

I would be grateful for your advice. Thank you very much.
Andrew Lian

The page I need help with: [log in to see the link]