Hello,
I know it's been addressed prior to this, but perhaps this will shed a bit more light on the topic of slow updates to the guild rosters.
I avoided touching the roster until just this eve, after tapping it for the first time it added me right away, but documented the level prior to what I've just obtained. This may be intended, may not, can't really call one way or the other myself, but seems that the bug isn't with updating, but also adding....though it added, perhaps I'm just confused.
Either way, not an urgent situation, I'm sure there's more important tasks at hand up (or is it down) in GM-Land...Have fun!
Thanks again!