Sorry for the problem with the navigation label of a menu. I could not duplicate this behavior in a test site. Here’s how I was changing it:
I loaded the Monument theme and started changing the labels. I’m not sure how you’re making the changes. Can you please explain the steps you’re taking? Also, double-check the versions of the theme and the BoldGrid plugins that you’re using. Provide us this information so that we can investigate the issue in more depth.