(I play this on gog and use mod.io)

I build a station with two tracks in the underground. added somewhere an entry, connected both. The station is underground yet my outgoing track hits the surface pretty quick so I can look into the station while being on surface.
Setup a line and have a train running.

Now I added one more track as I would do with vanilla stations.

Done - and an error pops up - train is unable to find a route. Tried to change platform of the line - all marked red for unreachable. And the exit of the station is filled with a rock wall - as looking from cabin and outside.

Try to demolish the added track - "impossible due to invalid configuration: 1 module collides".
That seems to be the entry - because it felt mandatory that the entry is on different ground pixels then the station beneath.


Getting "into" my train (cabin view) I saw a solid rock wall. As station was new I tried adding tracks on all station exits - no view changes.

Research result:
- the train was still on its track - I don't remember previous track no & platform no, this seems to have changed and the line got no update on new number.
- the station lost 0,1m track connecting it to the outgoing track = making a wall and missing path
- the added track cannot be demolished due to collision with the entry and neither can the entry