I have defined in the Fonts panel, Roboto font with all the available font weights including 100.
If you look at the link in the secure note, at the section with the icons, the title text is not rendering with font weight 100, my guess is that it is 400 or higher. The what the font Chrome extension detects it as font weight 100.
Can you spot anything that would be causing this?
I do not have caching turned on this site and I did clear the Pro cache from the Status screen.