I ran this search with Google, to see if there were news about PHP-FPM, with those exact terms, that I place between brackets:
[ "php-fpm" site:https://www.virtualmin.com/forum ]
And the result was, well, bad. What was returned, the results, that was not forum posts or forum threads, that was forum PAGES.
Meaning: page x of subforum y.
Of course, this is useless, as the sorting of posts is only valid at the exact time of the indexation, and even then, it would return a page with many listed forum threads.
It's a pity, that some people making Google searches skip the chance to find the information on the forum.
So, here's for my friendly suggestion, dear Virtualmin folks, check your forum's indexation settings :)
And have a nice day!
(P.S.: also, while I'm at it, I still don't get how one can receive email notifications that there are responses to a thread I opened. At best, I find how to subcribe to a whole forum, not just to a thread O_o)