Oncoming AI riders crossed lanes

Riding this morning, Zwift Island counterclockwise, Mac client.

On the sharp right-hand turn heading uphill, there were two oncoming AI ghost rider groups, groups of 4 and 2, riding single file. Both groups of riders rather quickly moved into the oncoming lane (left lane as headed CCW). They didn’t all do it at once, but fairly quickly, one after the next in sequence as they approached. Haven’t seen it before or for the remainder of my ride.