I have already gotten the full kindling for all of my armor pieces, including the bond from talking to Eva, and am trying to complete the gilded triumph that has these requirements: "While wearing a set of fully rekindled Candescent armor, complete dungeons, raids, Master or Grandmaster Nightfalls, or win rounds in Trials of Osiris." I have completed Duality 3 times with my white-glow Candescent armor equipped the whole time (not transmogged). The first I saved a cp on a different character, the second I completed without leaving, then I realized I had full leaves, so I did a bonfire. The third Duality was from a boss cp, but I didn't have full leaves. All of these cases didn't progress the triumph at all. I have yet to test with other dungeons, but I thought it would be useful to post. I've included a picture of the triumph in question.
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Update: Completes after Shattered Throne (the weekly dungeon). Still weird why it didn't work for Duality even though it doesn't specify.