Why are F6 Surface Spawns Broken?

Hi,
This issue has been around since the game was released and I'm wondering if there's any way around it. Crafts spawning on custom spawns on the ground spawn in travelling at 10 m/sec or more upwards, or explode for no reason.
This only applies to some spawns--some seem to be completely free of it. I know that bug reports have been made on this issue, is there a reason why the problem doesn't seem to go away though? I'm assuming that I'm doing something wrong with the way I make the spawn or craft?