2.8.9.4 Extra naval moves

[Gar-Dog]

Selected a combined for the Russians, and they got to do a second naval move, even after it said zero moves remaining!

[Centuur]

RAW:

You make 1 “naval move” with SUB units every time you:
(a) move a task force of face-up SUB units from one port, to any
number of destinations (ports or sea-box sections, even in
different sea areas)

So you can move SUB's out of the same port separately, this being one naval move, but you can't move any other ships or SUB's out of any other port after you have done so.

No bug.