For the past few days, fonts in the new-style article pages haven't shown up correctly. The headline ("main-title"), by-line ("meta-data") and body are supposed to be "opensans" but are displayed in one of the fallbacks. The article subtitle ("sub-title") is meant to be "opensans-bold" but again is just using a fallback. Oddly, other variants of Open Sans specified elsewhere on the page (for example in the topics bar and header) are displayed OK. Same issues in IE and Firefox.