It make the train go refuel when in reality, its still as 50 % of the full autonomy when using Nuclear Cells as fuel, because of the 1 stack size, since you have to trigger the interrupt when there is still one Nuclear cell in storage plus the one already in the engine .
Edit :
After more thought, its not a realy wildcard issue but more an interrupt issue, because if I use the correct Fuel type in the interrupt condition instead of the wildcard the result is identical

