Everyone disappears in the middle of the race at 7:08 for about 40 seconds. Then a power drop shortly thereafter. Video here: https://youtu.be/VqxxhMroUAI
Did a free ride after dropping out of the race in frustration and the disappearing riders thing happened several more times in a 95 minute ride. Riders disappeared in companion app as well when this happened.
The companion app also kept freezing up. My location on the map (arrow) stopped moving, power reported did not change, could not use power ups, etc. Restarted phone and app. Cleared it up for a while then it happened again.