Continuing the discussion from Did onebox change? They're not showing for my main site any longer:
Not sure what’s going on here or if it’s related to this topic, but my site used to onebox beautifully in discourse - it no longer does as of a week or so, even here on meta. I just updated my discourse to tests passed… no dice. No changes recently on the wordpress site until we updated some plugins today.
Example URL that should onebox: