Strange recoding and headers after upgrading from 3.0.6 to 3.0.10

RT Users
1

I’ve upgraded RT from 3.0.6 to 3.0.10 version (more definetly -
installed 3.0.10 on other server with same database that 3.0.6 used).
And now some letters, that processed by 3.0.10 converts to something
strange and unreadable. Headers follows, note the double
X-RT-Original-Encoding header (actual domain names were removed by me):

MIME-Version: 1.0
In-Reply-To: <rt-3.0.10-481-4392.0.848516322792179@>
X-Mailer: The Bat! (v2.11 Beta/5) UNREG / CD5BF9353B3B7091
X-Priority: 3 (Normal)
Message-Id: <446377929.20040607173054@>
References: rt-481@RT <rt-3.0.10-481-4392.0.848516322792179@***>
Content-Type: text/plain; charset=“utf-8”
X-Virus-Scanned: by amavisd-new at bhost.ru
Content-Transfer-Encoding: 8bit
X-RT-Original-Encoding: koi8-r
X-RT-Original-Encoding: utf-8
Content-Length: 1231

What can cause this problem? What do double X-RT-Original-Encoding
header mean?
[TITOV-RIPN] http://www.bhost.ru/

2

What can cause this problem? What do double X-RT-Original-Encoding
header mean?

They mean that there’s something wrong and that RT is double-processing
the message. To debug this issue, I need you to send me personally an
email message that would exhibit this issue if piped into RT. (It would
also be good if you can verify that this issue is still a problem with
3.0.11)