Off-Topic (mostly)
I also noticed just now what is likely a rare use case but might be a problem in a busy topic if Moderators don’t get to approving promptly.
The pending posts, once approved, do not get put into the topic by when they were made, but by when they were approved. That is, appended, not inserted.
I suppose even if they were entered into the topic based on when they were made the “flow” could be a bit whack, but likely more so being appended rather than inserted.