Factorio Forums

The desync probably happened when player kaytzo (north-west on the map) ordered the train with locomotive "Anthony Griffiths" to station "Copper 1" (next to the player) with wait condition "Inventory full" using the "Go to the station" button. Apparently it happened a short time after the button was pressed and the menu closed again though, so I'm not totally sure.

Two more possibly related desyncs: the first one when the small 1-1-1 train arrived at "PQ Smelter" and the second one when it was changed from automatic to manual mode (wasn't there for that one, so not much more info)

Are you using mods or a custom scenario?

No, at the time of all those desyncs, it was completely vanilla.

Thanks for the report.
I think it same issue as reported here 57738, because the bug was triggered by having two stations with the same name on in the opposite direction to each other withing same rail block.