OpenAM did not follow RFC 2616 and RFC 2047

According to RFC 2616 Section 4.2

The content of a header field may only be "the OCTETs making up the field-value and consisting of either *TEXT or combinations of token, separators, and quoted-string" and in section 2.1 makes explicit that "Words of *TEXT MAY contain characters from character sets other than ISO-8859-1 [22] only when encoded according to the rules of RFC 2047 [14]."

For illustration purpose, we use a fictional name Hunter Poe Программное обеспечение воин

In the OpenAM agents if the raw bytes are consumed and displayed, it is

Hunter Poe ��ог�аммное 
обе�пе�ение воин

Although if the raw bytes is consumed as ASCII and then convert them UTF-8 it displays correctly as

Hunter Poe Программное обеспечение воин

But according to RFC 2047 it should be displayed like this:

=?UTF-8?B?SHVudGVyIFBvZSDQn9GA0L7Qs9GA0LDQvNC80L3QvtC1INC+0LHQtdGB0L/QtdGH0LXQvdC40LUg0LLQvtC40L0=?=