[No Bug] Drake Statue Fragment (Alloy)?

[Uisge_Beatha 186]

Not sure if this qualifies as a bug or is an intended feature but I received an alloy drake statue fragment from a cache today rather than metal.  Thank you.

[MrGARY 12,421]

These are intentional, the metal statues can be of any metal type now

[Jaz 2,666]

I have a "lump fragment, metal" from a cache....

Sounds like a strange one, is it a joker?