- Empty cargo inventory
- OR 30s inactivity
- OR 30s time passed
Video of the behavior (shot in 0.17.3, but the same happens in 0.17.4): For a second there, the train tries to go the stop it just left, which doesn't seem right in any case.
Save file: http://157.230.120.107/factorio/lazy17_17.zip (~45 MB). The copper and iron trains in southern chunk suffer from this.