As reported by TP-GLib, Idle does not set message-sender-id in the Message header. This seems to prevent TP-GLib to retreive message sender contact.
http://git.collabora.co.uk/?p=user/cassidy/telepathy-idle;a=shortlog;h=refs/heads/message-sender-35362
Reviewed by Sjoerd. Merged to master; will be in 0.1.9.
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