I find it highly unlikely that it’s not a bug. Probability of this happening naturally should be around 0.00017. I’m not great with odds but 1 in 6000 in American I guess.
The following race:
https://www.zwiftpower.com/events.php?zid=356341 user: Tulipunane Radiaator
Before the race I did a workout in Watopia with the epic mission Spark, then switched to Shiv TT bike to ride some more. Then transferred to Crit City pens where the game had equipped a default road bike (Zwift Aero?) for me which I then changed to Tron. Maybe the TT bike had something to do with it.