World drops and materials in the open world have been broken since patch 11.1.5.
Items that drop from specific mobs and open world epics are fine and dungeon loot stays the same, but most materials (ie any cloth, mote of mana etc.) are practically impossible to obtain now after killing a handful of mobs. This in turn has caused all the items affected to gradually increase in price on the auction house, making even old content far more expensive.
There’s overwhelming evidence to back this and I and the community would appreciate someone to look into this problem and address it one way or another.