Bug: Right nav disappears
I think the new search box might have tweaked something with the right nav.
Previously, the right nav was always visible, and as you scrolled, each item in the right nav was highlighted, even when you scrolled all the way to the bottom of the main page.
Now, the right nav disappears when you scroll down.
You can see this behavior on a longer page. For example:
I still have an older build running locally, so I took a video of the style guide. Watch on the right as the little blue highlight moves down the page:
Edited by Suzanne Selhorn