I had not started the game up for 15 days or so. My last time was with a friend which may or may not be a factor.
Upon starting the game up I was looking for my locomotive on the compass which I was sure was there. However today there was an update and noticed it was gone. Thinking the devs removed it I thought nothing of it. The train has 2 stops, no biggy and so I caught it and stopped it while using it to travel.
When I got out I wanted it to resume the function of moving without me and it did not. No matter what I tried, changing the schedule, getting in and out and etc the train would not move. I deleted the Train stops, removed power line and nothing.
What did get it to work was me deleting the train and freight carts then rebuilding and putting the train back on the track. I just wanted to put this out there as maybe a minor bug. It is now on the compass with the freight cars.
I asked on discord before finding this out myself. Hope some find this helpful just in case. Or reaches the devs.