Organize Favorites feature cannot be accessed at all by keyboard users

Accessibility Issue: The Organize Favorites tab in Sites cannot be accessed at all with a keyboard; thus, keyboard only users cannot reorder their favorite sites. Attempting to tab around using a keyboard while in the Sites window, Organize Favorites never takes focus.

Once you're in the tab (if you do use a mouse to get there), it looks like the three bars you select to move the sites can take focus, but there's no indication of how a keyboard user might drag/drop them?

To reproduce:

1. Open the Sites tab and Favorite at least two sites.
2. Using your keyboard, hit the Tab key to try to access the Organize Favorites option. Issue: It never takes focus.
3. Click on Organize Favorites with your mouse. Use the Tab key on your keyboard to move around the window, see the sites take focus. Issue: There doesn't seem to a be a way to move them?