It happened to me a few times with various ships.
Some were tiny turrets, not breaking 30 blocks in length. But when it happened to my half finished 800 meter long carrier I was pissed off.
Eventually, it fixed itself (?). No idea what happened or why or even how. If you get that issue as well, I suggest that you try to save the existing blueprint and load it on your singleplayer. If you are already in single, try to load a new copy of the ship. Alternatively, wait indefinitely until Schema releases the next update ^^
Oh an the carrier?
Well....
I\'s doing fine ^^ I parked it next to a complete edition of the Spirit of Fire - forcing over 7 million blocks into one sector and generating enough lag to tear a hole in time but hey, it was worth it.