Scenario:
I completed DIRT Family Values ride (route: Wandering Flats) which was from 2:30-3:20 PM Pacific on 21 May, and joined BanditZ Ride United which was from 3:30-4:30 PM Pacific (route: Triple Flat Loops) which I was assigned to lead. Once the pen countdown reached zero, all of the riders disappeared and I saw only the Red Beacon. I was able to Fan View riders whose chat I saw in the Companion App, but in my ZwiftApp 1.65 on Windows I couldn’t see them from my view. I tried to exit the event to rejoin without restarting the ZwiftApp and the “Destination was no longer available.”
I restarted the ZwiftApp 1.65 on Windows and I was able to rejoin about 6 minutes later from the start time; I was unable to toggle the fence option which I should have had, and did have originally.
Original join:
Rejoin after ZwiftApp restart:

