This case is best explained with screenshots, so I’ll use few words.
State 1 I’m about to post new answer:
Please make a note that there is enough space to put my new message into without having to scroll the page.
State 2 I’ve just posted my short answer:
I noticed this unneeded page scrolling happens all the time for me when actually it is not needed.
Also, after posting a message, I usually expect to see as much messages before mine as possible - I do not know why, it’s just what I expect naturally. Anyone here feels the same?
If it was discussed already and the decision was made, then maybe at least lets avoid scrolling when it’s enough of space to put my new message?