The original announcement is linked in posts above, but here is the relevant part:
The Moonstone Library will now be geared to players' Boosted Refined Goods.
Scroll boosted players will now produce
Silk in the Moonstone Library
Crystal boosted players will now produce
Scrolls in the Moonstone Library
Silk boosted players will now produce
Crystal in the Moonstone Library
From what I see in my cities, this change affected Endless Scrolls (2x1) and the Library (4x4).
Harandar - marble/crystal/gems - (1) in inventory 4x4 now gives Steel ???
(bolding is mine)
I have no idea ow-in-ell that happened. Maybe the ever blame-able 'lag' when we get tool tips on hover?
The first thing I'd do is wait until tomorrow, be sure I had my morning caffeine, clear cache and reload browser, then log in and look again when I collect. I'd then open my summonings and try my best to make sure I don't hover over anything else first then hover over the bldgs again.
If I continued to see it giving steel, I'd submit a support ticket with pics! Maybe it's a visual error only, but the moonstone set has never made any T1 goods at any chapter level that I know of...