This is a very fundamental topic in Spice simulation. In my entry user guide, I have two slides that discuss how current direction is defined. Spice has a long history, and people began netlisting their circuits, and no such confusion. GUIs were developed later, and it is common that there is no visual indicator showing terminal order at the schematic level (if you rotate your resistor in LTspice, you will get into trouble too). Therefore, you have to be careful if you mirror or rotate your device and need that device current into a B-source.
