ExtractedAddresses not decoded in some cases

I have come across the following email: http://pastebin.com/ThzKayHm

The ExtractedAddresses array for the FROM header contains the following content:
'name': =?windows-1256?Q?_____________?= =?CP1256?Q?_________________________________________________________________________________PPI____-_____Advice____-______Line______?=
'address': [email protected]

I am expecting 'name' to equal (or there abouts): PPI - Advice - Line

For most emails, the 'name' is decoded however this does not appear to be working in this case.

Previous pastebin expired, here's a new link: http://pastebin.com/Lki7w0rE

Any update on this?