When using the infrastructure style, some stations are not shown.
It seems that this happens when the railway station is represented a building rather than a node in OSM.
An example with two nearby stations :
Moirans (not shown in ORM) : https://www.openstreetmap.org/way/80361154
Moirans-Galifette (shown in ORM) : https://www.openstreetmap.org/node/2613729252
Is it only a rendering problem on ORM's side or should all stations be represented as a nodes and not by the station building in OSM?