issues with doveadm sieve commands

Hi

This is dovecot-pigeonhole 0.4.13 and dovecot 2.2.23 at FBSD 10.3-STABLE.

I am used to run doveadm sieve commands for some time now whenever updating a sieve script.

Recently those commands fail with a user set explicitly, e.g.:

mail> doveadm sieve list -u test
doveadm(root): Error: User doesn't exist

When asking for all users, I do not run into any error:

mail> doveadm sieve list -u '*'
user1 default ACTIVE
[snip]
test default ACTIVE

mail> doveadm sieve list -A
user1 default ACTIVE
[snip]
test default ACTIVE

That is true for all doveadm sieve commands, but other will work, like:

mail> doveadm user -u test
userdb: test
  user      : test
  mail      : mdbox:/—path-to-maildir--/test

Hmm, any idea what is going on? I do not know when those commands stopped to work, I didn't try to update my sieve scripts for some time now.

Thanks and regards, Michael