Not sure if it's common knowledge, but I found a bug with the freighter refiner room.
I left stuff running in it (silicate to glass) and immediately jumped through freighter warp. After that my refiner had returned to a previous state (it contained a bunch of ferrite dust from previous rust processing).
Looks like the game "forgot" to save the freighter's state before jumping. Maybe saving before the jump would have prevented that.
I didn't lose anything too valuable, but maybe be careful.