Similar bug with Lini's level 17 Quest Advancement, I got the boss card "Ripnugget and Stickfoot" (has the animal trait).
General Info:
* Device: iPhone 5
* PFID: E1DAD0BC536648F2
Game Info:
* Pass & Play: No; Permadeath: No
* Mode: Quest
* Quest party: Merisiel, Seelah, Lini
* Location: Victory / rewards
* Scenario Difficulty: Don't remember
* Wildcards: Don't remember
Lini:
* Levels achieved: 17
* Rewards granted: Animal Ally
* Cards received: Ripnugget and Stickfoot)
"Ripnugget and Stickfoot" was granted, then in the deck rebuilding phase, the card did not show up in any of the categories. Playing the next scenario I actually drew it. (see picture)
In this case I am also holding another animal. (leaving quest mode saved as-is for now)
(Picture link - I can't seem to get an image link from google drive with an ending the forum accepts)