Bright Dust-bought Festival of the Lost EverVerse Armor cannot be Masterwork’d, but those obtained via Ephemeral Engram can. I don’t know if this is intentional or if it’s a bug.
-
Hello, and thank you for your report. We are looking into this; I will forward your report to the appropriate party.
-
Everyone I play with has noticed the same thing. It's the same bug that happened to the dragonfly regalia armor last month when Forsaken was released. Hopefully it's fixed soon!