No, it's not a JFBConnect issue that we can tell. The bug report was originally submitted by a site admin that isn't using JFBConnect (or Joomla) at all.
The issue seems intermittent across sites. Some of our sites that we test and develop on are affected, others (like this one) are not. There was a Javascript update by Facebook at 8:19pm tonight (see
here
). That update likely hasn't rolled out to all of Facebook's content delivery networks, and so therefore, it's not affecting all sites yet. It's also possible it's a specific conflict with certain applications on Facebook's end or conflicts with certain configurations of Javascript files on sites. Either way, it's an issue in Facebook's all.js Javascript library, and it will need to be fixed there.
We are looking into workarounds, but so far, everything points to this being an issue with the update they just pushed out.
Alex