Went back to farm a couple and it seems they don't drop anymore. year old posts talking about same issue. parser shows 1100+ mob kills. no ornaments. in the bixie HA's ( not warfront, I am talking the Snazileu ha's). Anyone else?
According to the data, they should drop from bixie NPCs in the Bixie Warfront static zone, raids, missions, and heroic adventures. They are rare. Did a quick check in the static zone and the bixie NPCs can drop the ornaments and one of the bixies in the zone has an ornament.