posts no longer sorted by activity date.

I have noticed over the last day, posts with comments are no longer bumped to the top of the group/dashboard. you can see this by logging in and viewing the "Auction" group.. scroll the page and you will see that I commented on several posts, but they do not display at the top anymore. I have made sure Settings>Stream>pagination> Items sorting is set to "last modified date"

It appears to have happened after the last fix supplied by Arlex for comments not appearing in the group when updated on the dashboard, and vice versa. http://stackideas.com/forums/album-comments-on-dashboard-stream-do-not-display-in-the-group-album