Starting a new thread for this because it is a new ship problem.
Newly purchased ships cannot save:
*Cosmetics
*Decorations
*Trinkets
Tested on an existing ship and it saves no problem.
Update on this, it appears certain ships get bugged when purchased. I purchased another new ship after this one and the save works fine, but this ship still cannot save.
Support indicates that they are looking at that ship.
So if your ship cannot save you need to open a ticket so they know you have a bugged ship.