The +ve current direction in spice for resistor, capacitor, inductor and voltage/current source are defined from 1st net to 2nd net.
There is no default order, it is just because you used Ctrl-R to rotate Rc, and in schematic, its 1nd net go to bottom in your schematic.
You can check net order by
- F3 (View Symbol Properties)
- Click on component
- Goto Pin Nets
- Click pin name you want to highlight
