I think that was before their "rebalancing". The Bastion now has a chance of producing finish consumables.
Appears you're correct. I actually was referencing a rebalancing where it was taken off everything else and added to it. But apparently it was rebalanced again after that.
I had ended up skipping that event because the building I was interested in, the Silk Weaver, was taken off the main building (the sanctuary). So don't have any of the buildings from that event in my cities. Boy that one was a doozy for rebalancing!
Appears nothing makes the tranquil trio fragments then.