Train station (red dot) missing on map

Hey,
first thanks for the great site :) I was planing a small trip in the Drôme valley in France and realized that some train stations show (Crest for example) but others don't. 

Luc-en-Diois (https://www.openstreetmap.org/node/378387063#map=16/44.60965/5.46170)
I imagine some open streetmap category is maybe missing on this one? But not sure.

Small one: Luc-en-Diois shows on the cycle.travel map as Luc en Diois but if I want to search it I have to add the "-". Any Idea why? ;)

Hope someone knows the problem with the stations, would like to fix them for the future.

All the best,
Tobias