During a ride myself and an AI rider had a photo finish on the KOM segment of the ride. I swear I won, but Mr. AI claims otherwise… 
Joking aside, it seemed like the AI rider may have interfered with my traverse of the climb since Zwift just kept counting my time to the top. It continued to count until I finished the ride. I completed at least one more lap after the island and despite completing the climb again it did not stop.
Hi Trevor,
I think some people have reported this issue before (where the timer doesn’t seem to stop). I’ll see if I can find out where it’s at.