Decode subject/filename problem

[Zek]

Hi. I'am using 7.1.3_GA_3346.UBUNTU10_64
Mail with Subject, Filename, Name, etc. fields written without explicitly specifying the encoding displayed in the web interface with wrong encoding.

For example, screenshots is attached.
In fact, the letter is as follows:

Subject: Возврат холодильника KGV 36Z45 от ИП Клецовой
MIME-Version: 1.0
Content-Type: multipart/mixed;
boundary="----------4CFEFD1BD44049"

------------4CFEFD1BD44049
Content-Type: text/plain; charset=windows-1251
Content-Transfer-Encoding: 8bit
...
------------4CFEFD1BD44049
Content-Type: image/tiff; name="KGV 36Z45 от Клецовой .tif"
Content-transfer-encoding: base64
Content-Disposition: attachment; filename="KGV 36Z45 от Клецовой .tif"

In this case charset is cp1251, a similar situation with koi8-r.
All known mail clients are able to recognize and decoding this mail and correctly display the letters, in particular, gmail too.
When can I expect to fix this problem?

[phoenix]

When can I expect to fix this problem?

You can expect a fix when the problem has been reported in bugzilla (link at the top of this page), when it's confirmed to be a problem it will be done at some future time. File a bug report (search first to see if one exists) and vote on it.