Sorry for delay, this one.

In this save i stand near this support train. Launch this train and send it back to load station.

my support-train setup:
Filter inserters set to check train content and then load missing items, but cause high-tech trains stops so fast,items are being loaded even before train fully stops, breaking the amount every time train stop at this train-stop.

Feels different compared to 0.14, probably broken, maybe not. No difference between 0ms and 500ms delay. Maybe I'm wrong, i dont know.