When user clicks envelope icon to mark message as read, the read messages test doesn't get updated in outline view until screen refresh.
A recording demonstrating this can be seen at https://oncourse.iu.edu/access/content/user/kpropst/message_update_count.swf
Steps to recreate. Any user can be octest1 and octest2
octest1 created "test octest1" post
octest2 created "test octest2" post and replied to octest1
octest1 clicked on forum, then on "Mark all as read" icon - icon disappeared, bold removed from subject, but count is not updated (o1_read1.png)
octest1 clicked on "Mark all as read" icon for "Re: test octest1" posting from octest2 - did not update properly either (o1_read2.png)