dovecot - Jun 2019 - unknown Sieve Capability `editheader'

I am getting "error: error: require command: unknown Sieve capability
`editheader?.? In sieve.log:

This is the start of .active_sieve

## Active
require [ "editheader", "regex", "variables",
"fileinto", "envelope", "mailbox",
"imap4flags" ];

Editheader is also listed in dovecot.conf

managesieve_sieve_capability = editheader fileinto reject envelope
encoded-character vacation subaddress comparator-i;ascii-numeric relational
regex imap4flags copy include variables body enotify environment mailbox date
ihave

On 6/13/19 11:49 PM, @lbutlr via dovecot wrote:
> I am getting "error: error: require command: unknown Sieve capability
`editheader?.? In sieve.log:
Did you enable the extension? What dovecot version?

https://wiki.dovecot.org/Pigeonhole/Sieve/Extensions/Editheader

-- 
Aleksander 'A.L.E.C' Machniak
Kolab Groupware Developer         [http://kolab.org]
Roundcube Webmail Developer   [http://roundcube.net]
----------------------------------------------------
PGP: 19359DC1 # Blog: https://kolabian.wordpress.com