Time Trial- finish line

I’m new to Zwift and enjoying the ZHR MasterTT Series…one frustrating thing- when I “dramatically” pass the “finish line” of the 10-mile TT my time and mileage keep running as if still riding in an event (although now I’m in a slower, cool down pace)…why doesn’t the event stop being timed when rider passes the finish line like in a real TT? Thanks very any help.

Best, Ed B.