For a while on change.org (2021 was when I observed it) if you were looking at a petition with n signatures, they would show you n-10 or so, and increment the

For a while on change.org (2021 was when I observed it) if you were looking at a petition with n signatures, they would show you n-10 or so, and increment the counter erratically over the next couple minutes to add the remaining 10... as though people were rapidly trickling in to sign this very hot petition right this minute.