You connect the logistic filter like this:
0eNrtVk2PmzAQ/SurOcMKnM9FVY89Vf0DVYUMTJJRwUbGpI0i/nttyLJsIFknymEPzSHSwPjxeM/zzBGSvMZSkdAQHYFSKSqIfh6hoq3gub2mDyVCBKSxAA8EL2ylZCJLqTQ0HpDI8C9EYfPLAxSaNGGH0RaHWNRFgso0jFd7UMrKLJDCPsmABM8LDw4Q+eHzwkAbOlrJPE5wx/ckle1KSaU16biQGcZyE8sSFe8ggm6JwNTWle0O7Z ...

Train pathfinding does not check for collisions based on train length
It should, really. Or at least add a penalty for crossing its own path, maybe proportional to train length to encourage it to take detour even if it goes through the station.
But I understand it might not be easy to code and ...

Just got this issue today with the long train (50 wagons+locos total)
Train chooses to go full circle through the roundabout intersection instead of going other way, hits itself and crashes.
trainloop1.png
trainloop2.png
There's two alternative paths - one to bypass the circle (turn left at that ...

Oh, bugger. I missed it completely.

Not a bug then.

Sometimes when I set up a stack filter inserter to unload from the train, it sits there stuck in "Waiting for source items" even though the train wagon does contain a filtered item.

The issue is very intermittent - in this particular case, I have about 10 identical blueprinted resupply stations ...