But only on the Waffle terrain I think. Maybe it is just something to do with the WWI airfield map object.
For days I have
trying to spawn into an aircraft and taxi out for take off on any of the fields on Waffle.
I have tried every possible permutation and even a host of dirty tricks to convince it to work. Nothing does. You die instantly on spawn. Instantly.
1. I've tried both WWI and WWII aircraft. From the center fields and the outer fields. Always same failure.
2. I've tried both WWI and WWII aircraft from runways on NDIsles and was successful.
3. But I can certainly spawn at those fields on Waffle in regular offline practice.
So it seems to be some interaction between the Staged Missions and the Waffle terrain. I've made 15 or so missions attempting it, so it is not just a single corrupt mission.
I have kinda developed a theory, but I may be daft. Zooming in really close to the spawn point and watch during "run mission" in the editor, it looks like the planes start underground and rise up out of the dirt like zombies before starting to taxi. For AI that seems to be fine. I've seen the AI roll through trees on taxi and not be hurt. But as a player, I think it is spawning me underground and thinking I crashed and kills me.
And no, fiddling with the spawnpoint height and waypoint height doesn't seem to work around it. I am pretty much convinced I've tried everything.