Steam Riviera Line Class 802 Showing Not In Service

I'm driving the class 802/1 on the Riviera line in timetable mode, seeing this issue with a couple different services. I tried both 07:25 Exeter St Davids to Penzance, and 08:43 London Paddington to Penzance.

The train is showing its destination as "Not In Service", I can't figure out how to set the destination manually. Is this a bug?