Epic Games Free Roam In Time Table Mode: Permanent Red Light After Spawning Train And Setting Its Destination

I am in Wiener Neustadt, and in timetable mode, I spawned a train, set its destination to Mürzzuschlag, and now I am waitintg in front of the platform's red light forever (45min). Other trains in the station going the same direction are all gone. The destination is shown in the upper left corner, as expected.

Is this some known bug, or am I doing something wrong?