User blog comment:WolfgangBSC/Wolfgang's Random Chat Room/@comment-24787182-20150325145918/@comment-25373667-20150325200603

And eventually, they'll fall out into space! And that's how flying ships work.

Also, these same glitches occur in vanilla, but only with really tall ships. For instance, Devastator can't turn, and the ends and base of the ship are invisible in dock, unless you zoom in on them.

However, the Steel Thunder is about 900m long IG, can turn OKish, and doesn't have the invisible blocks glitch. So IDK. Maybe your ship is too tall. Steel Thunder is only 40m tall.