Can't bailout in IJN fighter pilot campaign

[Aruberikku]

For some reason I'm unable to bail out in my current campaign, I'm flying as a fighter pilot for the IJN with a A6M2-21.
I've first discovered it when I needed to bail out after I had ran out of fuel and couldn't make it back to my aircraft carrier.

I've got no problems bailing out when flying the same aircraft in the quick mission builder and I've also tried another campaign (flying for Finland) and I've had no problems there either.

I've tried re-assigning the bail out key but that didn't work. Does anyone know if there's a solution?

Running IL-2 Sturmovik: 1946 v4.09m on Windows Vista SP 2 (32-bit)