Description of Issue:
Message Board tab options ("Recent Posts", "My Posts", "Subscriptions", and "Statistics") are not functioning when the Message Board widget is added to a Content Page. It has been confirmed that only the "Categories" tab is highlighted, whereas if a Message Board widget is added to a Widget Page, all of the tab options are functioning as expected.
Steps to Reproduce:
1. Start a clean bundle
2. Create a new Contents Page (Site Builder --> Pages --> Content Page)
3. Add a Layout section block (i.e., 1 column)
4. Add the Message Boards widget into the section
5. Publish the page
6. Click on 'Recent Posts' on the Message Board navbar
"Recent Posts" tab is highlighted and recent posts are displayed.
Click has no effect: the "Categories" tab remains highlighted.