Flying ships sometimes don't spawn at their /locate coordinates

[JSJBDEV]

Flying ships occasionally just don't spawn and can't be /place'd we are not entirely sure why, but as it works for normal ships, it would be reasonable to assume it's something to do with their worldgen/structure/flyingship.json

For players: this probably won't effect you, it just means that flying ships are rarer in the world then was originally intended.