The comment list appears to be buggy: newly-created comments don't put the post at the start, even when posted with bumping. One-minute old comments were located on the second page at the time of this posting, changing to one-hour old in a few minutes.
Posts in question: post #1241122, commented app. 5 minutes before this post, preceded by post #1241072 and post #1240672, commented 17 and 21 minutes before, respectively.
Updated by DakuTree