May 2016 BreakfixPosted: 2016-05-11 13:05 UTCUpdated: 2016-05-11 16:25 UTC
As of May 11th, roster updates are now fixed, but people in the above scenario will be completely omitted from the clan roster. They MUST have Bungie accounts. If your number of clan members doesn't match, this is probably why.
As an example:
The clan DoD Ronin has several people that meet this criteria, such as mblott7. You will notice if you click on his name in the roster, he does not have a Bungie ID and the page even says he isn't in a clan.