If your portrait reverts back to default, it means you haven't saved the current appearance to your gear set (the top-right spinning-arrow button in your character profile screen). Assuming you use the same pose for 10 jobs, you will need to change into these jobs and save your appearance so that the portrait will work properly. You will also need to re-apply the save-appearance if you change gear or apply a different glam on your current gear.



Yeah, I know it sucks. I hate the current system too.