Comment order sticks to "more recent first" on "load with ajax" option chosen.

Comment order sticks to "more recent on top" on "load with ajax" option chosen. Even if you chose the "oldest on top" on comment settings (which was default option), the order suddenly changes to "more recent on top" when "more" ajax link is clicked.

Under the heartbeat message, the shortened (ie: the last 3 comments) comment raw is displayed correctly, like the first comment is the older one and then comes the newer ones, but when you click on "more" to see the older comments, the order changes upside down and you see the newest comment on the top and the oldest comment at the bottom. Hope this is not a duplicate report, i searched the issue list but couldn't find a similar issue.