I have a Horizon Star Yacht and a Sith Starfighter. When I travel in sublight and leave the command with the FA-4 Droid and try to undock the fighter in flyght, error message appears (like - HSY is not in position u can undock).
I can't undock first, sublight travel and board the fighter later either. (Unable to board/unboard: You are not in a position where you can board/disembark.)
It's strange, because I did this before with other ships.
Yeah I loved when this was available but apparently it was either a bug they fixed or they removed the feature as it was intentionally removed. If you want it back you can post in the suggestion forum.