Hi,
in game
http://www.youplay.it/play/bm_GameMove.asp?GameID=841572turn 5, the following messages are written in the events log:
5. Manfred Von Paolofen was shot down by viking62's observer.
5. Manfred Von Paolofen was shot down by Marchino's observer.
5. Manfred Von Paolofen was shot down by Mordermi's observer.
5. cloudybear was shot down by chef62's observer.
The first three are wrong: Marchino and Mordermi planes are single seaters with no observers at all, while viking62's has an observer, but he did shot with the pilot too, since the target was in the hex in front of him.
Something weird happened...
I don't play games with double seaters so often, but I did play a few of them anyway

and I never experience this.