Upgrade to 3.2 adding **spam** on subject

[Francisco Reyes <li...@stringsutils.com>]

My setup is as follows:
postfix
maildrop
spamc called by maildrop. Rule in .mailfilter file

One of the rules we have is 
-----
if (/^X-Spam-Flag: *YES/)
{
   exception {
       to "!spam-account@mydomain.com"
   }
}
else
{
    exception {
        to "$DEFAULT/Maildir/"
    }
}
----

Basically some users want spam to go to a dedicated account.
After upgrading to 3.2 the forwarded emails to the spam account are adding 
**spam** in the subject line.

How can I turn that off?
I do not have "rewrite_header subject <tag>" in the local.cf
It is as if it is now on by default.