Uhhh... that seems another bug indeed!
Try changing Notification.subs.php like that:
ln.sent, mem.id_group, mem.additional_groups, b.member_groups, mem.id_post_group, t.id_member_started, b.name,
ln.id_topic
ln.sent, mem.id_group, mem.additional_groups, b.member_groups, mem.id_post_group, t.id_member_started, b.name,
ln.id_topic, b.id_profile