No alerts shown for stops

[hbruch]

According to the VVS GTFS Alerts, stop Theodor-Heuss-Straße in Hochdorf Eberdingen is currently not served:

However, stadtnavi does not inform about this (disruptions is greyed out), though alerts are requested (using (nearly) this graphql query):

I guess this is caused by the GTFS-RT feed sending parent station ID, while the GTFS-Feed uses quai specific stop ids but no explicit parent station for bus stops. Hence the alert is presumably not associated to this stop.