I first encountered the Parvati companion bug when I came to Roseway ("The Distress Signal" quest) - the quest "Sapphire Wine" was labeled botched, saying Parvati was dead. Went back to the ship, found her, and could add her as companion, which brought back the Sapphire Wine and I was able to complete it. However, now that I've come to Stellar bay, the next quest Don't Bite the Sun is stated botched again (stating the same "Parvati has died" reason), while Parvati is still in my group. I can't start the Don't Bite the Sun quest.