[Dovecot] Shared namespace

[Daniel L. Miller]

I'm not sure what's triggered it - I THINK it has something to do with a 
force-resync, but not sure.

I'm no longer viewing my full list of shared mailboxes.  I used to have 
a number of users shown - they had all had their ACL's set individually 
and were shown in the list.  "doveadm acl debug" shows they SHOULD be 
shown - at least I think so, as the output for the mailboxes that DO 
appear is identical for those that don't.

Where should I look for breakage?
-- 
Daniel