multiple quest item turn in yielding only one reward
 

Was just doing one of the spell trade-in quests in Firiona Vie and have before handed in 4 scrolls for 4 quest rewards at a time, but this time it when I handed in 4 scrolls it only gave me one scroll in return. The NPC I was questing with is named Barnal Flamehand.

Be sure that the spells you're turning in are ones for the quest. Not all of the droppable spells from 51-54 can be turned in.

Before I handed them in I moused over each one and brought their names up, same spell names as what the NPC asks for.

I've had this happen with gnoll fangs. I'd turn in nothing but 4's and sometimes just get 1 exp message.