Greetings,

As mentioned in Patch 3.1 notes, we have made it so that specific extreme primal items that used to drop directly from the boss will appear in treasure boxes while using the undersized party option. The undersized party option cannot be used to obtain Ifrit's Horn as it is obtained from the "Hard" version of the fight, so you will need to complete the Bowl of Embers (Hard) in a non-undersized party. This adjustment was put in place to make it easier to obtain items such as Kingly Whisker, which was highly requested.