I have 4 pages published, but only 3 are showing up in the navigation bar. The one -and only one- that always disappears is the Interview page sorenstauss.com/interview. You can go to the page, so it's published and live, but it won't appear in the nav menu. If I click the update button on the page's edit page, it will reappear in the nav menu for about a minute. After that, when clicking other pages, it will just suddenly disappear from the menu.
I have tried deleting and starting the page over, but it does the same thing.
The blog I need help with is sorenstauss.com.