[Dovecot] Strange output from LIST command

Hi,

i'm using Dovecot 2.1.7 (Debian Wheezy) and output from LIST command looks strange:

C: 4 LIST () "" (INBOX INBOX.Karantena INBOX.Spam) RETURN (STATUS (UNSEEN)) S: * LIST () "." "INBOX" S: * LIST () "." "INBOX.Karantena" S: * STATUS "INBOX.Karantena" (UNSEEN 0) S: * LIST () "." "INBOX.Spam" S: * STATUS "INBOX.Spam" (UNSEEN 0) S: 4 OK List completed.

The UNSEEN information for INBOX is completely missing. It is correct behavior? If not, is this a known bug in 2.1.7? Thank you.

azur