I know theres been a bug where if you finish below top 10, itll either say you placed 10th and show you the drops for 10th place, or will say you placed "0" and only show rep and either coin or credit (small amount), but today I placed 7th in Cerebrus event, and it said yet again that I had gotten plans for Champion Sword, 230 something rep, and an emerald. I did receive the emerald, coins and rep promised, but the champions sword plans did not drop. Seems it is a bug with the champion sword plans itself.