In trying to craft my ascended weapon I set my filter to Ascended only so that I don’t see anything else. I noticed that Deldrimor Steel Plated Dowel was not showing up but it is needed in order to craft the inscription.
Also since the required rating is 500 to craft it, that should also qualify the rarity to be updated to ascended.
Edit: It looks like the ascended crafting components do not have a rarity setting with the exception for Vision Crystal. Since Spiritwood and Deldrimor can only be used for ascended can their rarity also be reflected of that?