https://www.wowhead.com/news/bullions-will-be-fixed-next-week-and-continue-to-drop-in-war-within-pre-patch-345307

Blizzard

We identified an issue that caused Antique Bronze Bullion to become discontinued early unintentionally.
우리는 고대의 청동주괴가 의도하지 않게 일찍 지급이 중단된것을 확인했음.
Bullions will begin dropping again with the next weekly reset, allowing players to get the one they would have missed (the 13th) as catch-up, alongside the regular 14th Bullion.
주괴는 다음주 리셋과함께 이번주 것까지 합쳐서 지급될것. (13번째와 14번째 주괴, 따라잡기처럼)
After this reset, Bullion will continue to drop each week until the War Within launches.
차주리셋 후에는 내부전쟁까지 매주 지급될거임