Unidentified Yellow Dye (Rare) Bug!
Unid X Dye (Rare) has a CHANCE to yield a rare dye of respective colour, as it has a chance to yield an uncommon or a common one. Even the description says outright:
“Double-click to identify a Common, Uncommon or Rare Dye from the Yellow spectrum”.
It is not a bug – it is designed that way, and while i, amongst others, believe it’s a very bad design, it’s currently working properly.
.
Yes, it works that way with all levels. You’re most likely going to get a common dye no matter whether it says (rare), (masterwork), or whatever. Frustrating but not a bug.