No results shown when opening details of train

[Fregf]

When tapping on a train, very often I get the message that there is no result, On top, it shows however the rail car composition of the train. It happens for many trains, but not all. At the time of writing, searching for the 4 next trains between Ghent-SP to Brussels-Midi, not working: IC511, IC2811, IC412. Working: IC1512.