Submitted a report regarding this, but since I'm not sure that gets much attention, not that I'm sure a post here gets any attention either.

You can not craft a Twilights Embrace Robe(set item) with the Infused trait, if you try it will come out with the Well-Fitted trait despite the fact that one uses the right trait item etc. I had another person confirm it in-game just to be sure it was just not on my end.