This is doing my feckin head in, in the last hour I have merged about 50 posts by a single user together.
@bazcfc1 @TheSource @moshibeth @grog68 and several others i cant remember are guilty, and here is the cure. If you want to post a reply to several existing posts, click post reply to the first, type your comment, then scroll up to the second, click post reply to that one, the quote then appears below the one you typed already, then type your reply to that one, and so on.
Mate, use dark mode! The brightness is causing anger issues!