Funnily enough, this has just one happened to me in my UK LC, with a 2 pdr crew that had gone walkies - some nasty Jerries appeared in amongst my Brit defenders (briefly!
).
I have played about a bit (without debugging) with the save games to test a theory or 2, and think I have the problem area in sight. Now to break out the debugger and confirm my suspicions!.
Cheers
Andy