I have a site that was originally created in X v1 that is now using X v8.3.1.
In the theme options, all fonts are set to Raleway with the font manager on. In the font manager, the fonts are set to Raleway as well. However, no matter if I toggle for the font manager is on or off the menu, the footer widgets, and the breadcrumbs are showing up in a serif font.
The same is true elsewhere on the site.