[Evolution] us-ascii charset

["kme (sent by Nabble.com)" <lists nabble com>]

The From header of a email I've got recently is not displayed correctly in Evolution.
I'm seeing =?us-ascii?Q?Johan Blond=E9?= instead of Johan BlondÃ
I'm using UTF-8 as display encoding.
Is it a bug in Evolution? (Did not found it in bugzilla...)
Or was it the sender's email client that malformed this message?


Here are some useful headers of the mail message:

Date: Sun, 8 Jan 2006 16:19:7 +0100
From: =?us-ascii?Q?Johan Blond=E9?=
Subject:
X-mailer: Foxmail 4.1 [eg]
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit

Remark: the same mail is shown correctly in Thunderbird for Windows.

Screen shot:

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View this message in context: us-ascii charset
Sent from the Gnome Evolution - General forum at Nabble.com.