Invisible rider winning race

Joined KISS Race Series EU PM yesterday Feb. 14

Sprinted as a madman for second place beaten by 2/10 sec. only to discover there was an additional invisible rider one second ahead, Not visible anywhere on the screen the last 5 minutes of the race, which i recorded.
Checked last 5 min. carefulully and the winner is not on screen or on the small screen up right. How is this possible? And easy to win, if nobody can see you.
I can share the video.

I did a race with a friend a few weeks back. On MY screen he never showed up, not as an Avatar nor in the list of rider. Yet, he made a video of the race and there we were riding side-by-side and he saw me the entire race. In Zwift what you see on your screen isn’t always reality.