I had something odd happen on this afternoon’s tour of the island. I started my ride at 1:45 Eastern (US) and for about the first 35 minutes I was the only rider on the course. They weren’t even any bots. Several dozen other riders suddenly appeared mid-ride so I’m sure it wasn’t a case of no one else riding during those 35 minutes. Although somewhat boring riding alone, I WAS able to snag the KOM polka-dot jersey and the orange jersey. Another rider (who wasn’t showing up on the rider list) kept getting the Green jersey.
I saw someone had reported this problem a week back and Zwift acknowledged it as a server side issue. I just thought I’d post this so that someone knows it’s still happening. Here’s the link to the previous post: https://support.zwift.com/hc/communities/public/questions/202157175-Other-Riders-Disappeared