Is it possible you selected an oil to re-org with that was designated to go to a factory? The oil for production dropped by one.
Edit: I may be confused as to where you are in the step. You said you'd only just opened the CW Use oil step? What happened when you completed it?
The first screen shot was produced during the Chinese Use Oil step. The second was produced by hitting cntl-P the first thing after the Chinese had finished their step. Thus, no, it was not possible that a saved oil had been used because the CW had not done anything when the screenshot had been taken. Even if they had, no CW saved oil was being used in factories this turn.
When I completed all the oil steps and got to final production planning, the production summary was almost the same as it was on the screen shot, except, of course, that the CW had used some of its saved oil. The trade resources were exactly the same -- still just one. However, the number of unused convoys had increase by six, which makes sense, as six trade build points had vanished.
It's not the oil that's the problem. It are the trade received build points which suddenly disappear in the CW production planning. Strange, very strange, because the number of unused convoys isn't changed too (or is that due to the fact that the French CP's are transporting the build points?).
Question: can you recreate this every time you restart this game with a save from before the oil usage phase? If so, than it would be a good idea to send the saved game.
You are right; the convoy points are strange. All convoy points in the Bay of Biscay are CW, so the convoy points unused should have changed.
Yes, this is a stable bug, or at least it repeated on three different tries. I will send in the report.
MadExcept@MatrixGames.com, right? (If not right, I have sent a lot of bug reports to the wrong address!)
I thought I knew how to play this game....