[Dovecot] 2.2beta2: LSUB broken

Hello,

I have some problems with (listing) subscriptions on my test system running 2.2beta2 (compared with 2.1.15, configuration and Maildir content unchanged):

With 2.1.15: 0 lsub "" "*"

• LSUB () "." "INBOX.Trash"
• LSUB () "." "INBOX.in2009"
• LSUB () "." "INBOX.test"
• LSUB () "." "INBOX.test.test2"
• LSUB () "." "INBOX.in2010"
• LSUB () "." "INBOX.in"
• LSUB () "." "INBOX.virtual.small"
• LSUB () "." "INBOX.virtual.sent"
• LSUB () "." "INBOX.virtual.allin"
• LSUB () "." "INBOX.virtual.week"
• LSUB () "." "INBOX.virtual.gmail" 0 OK Lsub completed.

With 2.2beta2 (output of doveconf -n attached): 0 lsub "" "*" 0 OK Lsub completed.

... empty list. Same with "list (subscribed)".

After disableing the "virtual" namespace in the config, it gets: 0 lsub "" "*"

• LSUB () "." Trash
• LSUB () "." in2009
• LSUB () "." test
• LSUB () "." test.test2
• LSUB () "." in2010
• LSUB () "." in
• LSUB () "." INBOX.Trash
• LSUB () "." INBOX.in2009
• LSUB () "." INBOX.test
• LSUB () "." INBOX.test.test2
• LSUB () "." INBOX.in2010
• LSUB () "." INBOX.in 0 OK Lsub completed.

Note mailboxes listed with and without INBOX. prefix.

Thanks, Lutz