So I was doing the last mission of Light Side '6', which I believe is 6-E if I'm not mistaken, and after a barrage of grenades from Recon StormTroopers, my Luminara died, which cost me a star.
During the 3rd wave, I rezurrected her with my Ewok Elder before finishing off Vader.
As a result, I saw 2/3 stars light up since I'd lost a team member.
However, once back at the Light Side '6' map, I see I have 3* for completion.
I closed the game and reopened it to see if a refresh would affect it, and I still have my 3*.
I believe this to be a bug (though in my favor).
Obviously a low priority fix, but nonetheless.