OA Discussion topics sort order: an old topic with a reply shows up always as the first/newer one.

I noticed that topics sort order in OA Discussion Section looks a little bit strange: a topic with a reply stays always as first one as it was the latest one published (which it isn't).

I made a test publishing four different topics in the same day (with a time-frame window of few mintues between them) and the first published topic stays in top position just because, comparing with the others ones, it has gained a reply (comment).

First issue: an old topic with a Reply (Comment) is showed first (at top) in the list compared with newer topics that haven't any Reply (Comment).

Second issue: newer topics - ones published and without any received comment - stay below the top one that has a comment (AFAIK newer topics stay below that one really without any particular logical timing order, nor older down neither older up).

Is this by design?

These two sorting issues (which, as far I can see, look like a general sorting issue) make the topic list reading really counter-intuitive and difficult (users expect to find recent activity on top as found in other part of OA where content is displayed in a list and sorted or where it could be eventually filtered).

Shouldn't be that - generally speaking - the newest (published/commented) topic is always shown at top of the topics list?

I mean in a LIFO fashion where the Latest published - or eventually the latest commented - will always show up as the first one in the topic list...and so will always be the higher one.

I suspect that "Discussion sort order incorrect (sort by 'Last updated child/parent' is broken)" issue was not fully solved or, at least, the topic sort order still should be checked again against OA 2.41.

Thanks, Davide.