It's kind of in the title. The mannequins in the captain's quarters seem to not be saving the clothing items stored on them between game sessions. They hang just fine between planets, and all kinds of events, but if you save the game, even if you only quit to title to go take a bio break, it's all gone on reload.

I was quite annoyed to lose my pink trench coat. I'd had that thing since a very early point in the game. It was iconic of my character. Now I am a slave to RNG rerolling clothing stores over and over again hoping for a return of my favorite garment.

Secondary bug discovered: Mannequins in the captains cabin can be interacted with to finish the crew quest "buy new clothes".