dreadnoughts drift chest prob

Hey every one I was recently farming dreadnoughts drift or w/e its spelled and no chest (If you know what i mean) i thought this was just bad luck but I have done this 8 tines and still nothing is thier an update i miss or a quest that let you get these????

hum. can you read the line written on your avatar ? people might make fun of you. this was discussed a thousand times. nerfed. no chests any more.