I'm not sure if this is a similar or connected issue. I have a full loop track with one main and two smaller stations. Anytime I load and dispatch my three trains, they will only run between the main station through a smaller station into the third station and then return without going round the full loop. I have had substantial chats with customer services all to no avail. The only way I can get the trains to run round the full loop is to delete the third smaller station. A bit frustrating since getting the trains is pretty expensive and my Sims are getting fed up with the poor service!