I think this is a routing (choice of which line the cargo will use) issue. I have experienced this anomaly on birdgewaterserver for quite some time and reported it in another thread.
I sent an extra lineless convoy to carry a large pile of mail, but it never loaded the mail.
I thought it strange, but on another occasion I checked the reverse route button and found it to load.
Oddly enough, schedule reverses around there, but there is a decision as to whether it is reverse or not.
Cargo may be waiting for a reverse route that does not arrive endlessly.
The capacity is 10 for each wagon, so this should not matter.
What I wanted to say is that either station is congested or has zero capacity (but has cargo attributes) and cannot accept cargo.
I made a freight station with only goods siding, but it is not judged to be connected even if it is connected.
The player is fooled by the display. The factory never use that station.
I'm not sure what this means. What coverage constraint?
The information on whether the factory and the station are connected is ambiguous (diagonally) and it is uncertain whether the 3 tiles ahead are connected.
Sometimes it looks like it's fooling the player.
