dovecot - Sep 2018 - dovecot.index.pvt view is inconsistent

Hi,

we currently work on a fresh setup coming from 2.2.13 going to 2.3.2.1
(0719df592) (Debian Dovecot Repo).

We make heavily use of Public Folder with Per-user \Seen flag and
Subscription.

namespace {
  type = public
  separator = /
  prefix = Verteiler/
  location
maildir:/var/vmail/public/example.com/verteiler:SUBSCRIPTIONS=subscriptions/%n:INDEXPVT=~/public/example.com/verteiler
  subscriptions = yes
  hidden = no
  list = children
}

With our current version 2.2.13 this setup works. With version 2.3.2.1
we experience errors in the logfile:

Sep  8 23:12:27 mail dovecot: Error:
imap(user at example.com)<11328><e6jPlGJ1IxBOXnhS>:
/var/vmail/mailboxes/example.com/user/public/example.com/verteiler/.info/dovecot.index.pvt
view is inconsistent

dovecot.index.pvt.log is beeing created.

We found some appearance of this issue in forums but without any
sufficient solution.

Is the information provided in this email enough? What else would be
relevant?

Thank you!

Tobias

Hello Tobias,

On Sat, 8 Sep 2018 23:24:53 +0200
collect at shift.agency wrote:
> What else would be relevant?
How did you move the maildirs to your new setup?

I also see the error message mentioned in versoin 2.2.13, when copying
a public folder back from backup, that's older than the users'
dovecot.index.pvt in /var/vmail/mailboxes/...

- Chris