I leveled a priest as Shadow and kept Discipline as a second spec so I could also build a healing set as I went. I find myself playing more as Discipline now, so I dragged the Discipline spec to the top of the list.
The optimizer is recommending the “Death Throes” azerite trait, which can only be selected in Shadow spec, but also recommends Discipline healing traits like “Enduring Luminescence”.
Is this a problem with dragging the specs into different orders, or is there a problem with azerite trait selection for Disc spec?