I have gathered all feathers in all weeks previously. I still don't have the triumph and no more feathers are spawning. The triumph is still broken.
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[quote]I have gathered all feathers in all weeks previously. I still don't have the triumph and no more feathers are spawning. The triumph is still broken.[/quote] You haven't played Harbinger since the Triumph was fixed. Try actually playing the mission and collecting the new feathers before complaining that it's still bugged because it's not.