[Dovecot] Possibly fixes #722

data/conf/dovecot/dovecot.conf

@@ -163,7 +163,7 @@ namespace {
     prefix = Shared/%%u/
     location = maildir:%%h/:INDEXPVT=~/Shared/%%u
     subscriptions = no
-    list = yes
+    list = children
 }
 protocols = imap sieve lmtp pop3
 service dict {