I tried the Lagos map last night – most recent build for Mac OSX 10.14.6 on Steam.
It never expanded beyond the initial three stations – passenger numbers increased at these stations, as we would expect, but no new stations appeared. It ran for approximately an hour. Eventually I decided to try to kill it by removing all the lines, and the passengers just like would clear themselves. The game would not end.
I did take a video on my phone of the instance if that would be helpful.