Twenty Fourteen Theme, Secondary Menu: Highlight Current Page

I’ve just performed a clean installation of WP 4.5.3 and installed Version 2.5.10 of bbPress plugin. I am currently using the Twenty Fourteen theme.

I installed bbPress by following the instructions here on bbPress.org:

1. I created an empty page named “Forums” using the default forum root slug heading (i.e., ‘forums’).
2. Then I added the empty Forums page to the site’s Secondary menu – on the left-hand side.

The only trouble that I’m having so far is: The “Forums” menu item [in the Secondary, left-hand menu] isn’t highlighted when viewing the “Forums” page. I’d begin digging around to see if I can fix the problem myself but – without knowing anything about the complexities of WordPress – I’m not even sure where to begin debugging this! Is the menu’s dynamic functionality driven directly by WordPress? By the Twenty Fourteen theme? Or by the bbPress plugin?

Could someone please tell me how this is achieved? Or maybe tell me how to fix this?

Eric Pretorious
Portland, OR