Subject line encoded with UTF-8 not displyaing correctly

Does 6.5 support Quoted printable encoded subject lines?

We are receiving emails from a vendor that are encoded and the subject line is displaying the actaul text and not the decoded text.

We see in the subject:

=?UTF-8?Q?XXXX_Global_employee_survey_2008_-_Starts_now?=

We should see is

XXXS Global employee survey 2008 - Starts now

The same message displays correctly in other email clients such as outlook express and other web based clients.