After finishing a quality track "Unicorn Juice" in the Track Central (PC), I got the message saying I beat a friend's time, however I was still below him in the leaderboard.
I don't remember seeing this before.

Here is a screenshot showing multiple occurrences of this phenomenon on one page: https://i.imgur.com/FquTyjO.jpg

How did this happen? Is this related to Unicorn tracks specifically, or is it an old and common thing?