Currently that is working as designed. The pre-order costumes are meant for your main character only and not your bridge officers. We have announced on the forums that we are looking into ways to unlock them for the bridge officers, but until that changes it is not technically a bug. Thank you for playing Star Trek Online.
Comments
I already have a thread going about this here. Search is your friend.
But to sum it up, Customer Service had the following to say about it.
The only idea I have is that it's some kind of bug. I'd report it in-game and hope it gets fixed. *shrugs*
[EDIT] Still sounds like a "bug" to me despite what the Devs say.
But when I create a new char, I can select it.