fts-solr autoindex issue in public mailbox

Hello everyone,

I have a public mailbox: /var/mail/example.com/public/public_mailbox

with "Public/" namespace set up in config file.

When i move message from user's INBOX to one of mailboxes inside Public/ (for example Public/archive), i'm getting "indexer-worker: Info: Indexed 0 messages in Public/archive" in logs and i can't find the message through the FTS search. If i move the message back from Public/archive into personal mailbox the message is indexed by indexer-worker "indexer-worker: Info: Indexed 1 messages in temp_folder"

If i perform "doveadm index Public/archive" then the message is added to the index.

Dovecot version: 2.2.9 FTS backend: Solr

fts_autoindex = yes

Searching through localhost:8983/solr/collection1 gives the same result.