Scenarios Game Mode Disappeared

In some cases, creating a new scenario, the game mode disappears, why?

 

maybe you didn’t include a player train?

 

Thank you for your reply.
The player train is correctly indicated.
The problem is something else.

 

Can you post a photo of the list of services in your scenario?

 

That is strange. I built the same scenario (paths and trains) and I do get the play option. I made all services non-stop which you probably didn’t- not sure if the problem could be there.

 

With the new scenario you are able to perform regularly. When the program reopens, the play function disappears