Mysteriously, Comments Not Refreshing Threads to Top of Recent Discussions?

Lately I've noticed that commenting on some certain threads does not refresh the discussion to the top of the Recent Discussions feed. Is this being done intentionally? Seems like this makes it easier for certain controversial threads to get buried easier...
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Dr. Zola
Dr. Zola
Is recent better?
Dr. Zola
And, I find it easy enough to just have my mind skip over the Recruitment ones because the name of that category is longer verbiage and my mind just naturally ignores them.
I believe some occasionally get marked as “non-bumping” while not necessarily being closed when there is no further point in continuing to ask “any update”, “any update” every day, or sufficiently discussed while still waiting on final resolutions (so left open) but without need to constantly pull in more ppl echoing just the same thing, or leaving the discussion available for those who had already been discussing a specific issue or those who had given replies (still gets Notifications when updated), etc.
So can still discuss and get notified, while not continuing to pull in even more ppl with additional confrontational/argumentative views that are not constructive to the issue.
I guess I'm just a little confused as to why the INPUT SYSTEM UPDATE - SEPT 2021: DISCUSSION THREAD thread would have been marked as non-bumping when it is just over 2 weeks old and contains the most pertinent information pertaining to parry/dex issues.