I get the list sorted in descending orders by the number of replies and the caret points up.
Posts which attracts lots of replies are probably in good hands so I want to see the other end of the list.
clicking again on the Replies button used to do that but now when I click again, the caret points down so the list should be sorted the other way around but no luck... the list does not get sorted or re-displayed.
I've to click a third time on the Replies button to actually get the list sorted with the lowest number of replies first but notice the caret is now pointing up again...
Thanks @J-M-L. I verified this problem is universal to the Discourse forum framework rather than specific to the Arduino Forum instance, and escalated it to the Discourse developers via the appropriate communication channel: