Group Workout Today

I am using a Kickr Core and ATV and have the most recent Zwift version. Today’s workout Arise in NY seemed glitchy, and about 3/4 of the way through, the rubber band broke after I adjusted the bias. The rest of the small group rode away into the sunset. My trainer stayed connected and I didn’t stop pedaling. I noticed others riders on the course, and there were group members swerving and disappearing. Maybe flag as an issue. Thanks