Subway tunnels

[Vitiribeiro_]

When I go to build subway tunnels I can't see the
tunnels already built, this is horrible to build new lines
because I can't see where I built it, what I did wrong and what
need to delete in this process, the tunnels only appear when
they pass under streets and waters, when it is under construction does not appear. I don't know if this is because of a update or if I activated something, then help me, and if this is for cause of update for the love of God fix this please.