2 bugs:
1. If you max level Faylen when she's possessed by Cindy, release her, then possess her as Celica, her level goes down when Cindy re-possesses her. I've seen her level get reduced from 90 to 72. This bug has been present at least for the last two updates. If you want to see proof, scroll down and you'll see a previous comment that I've made concerning this about 2 days ago. (You'll also notice the increasing speed I was talking about, ignore that. The speed increase is actually a result of increasing a spirit's body influence. Speed does have a limit.)
2. If you have Faylen wearing her lingerie set as Cindy, when she masturbates in battle, she will change into her normal attire.