So I had to look into that one just to even understand what you were referring to.
The april 1.2.22 release was actually a phantom update by YuokiTani, the original creator of the mod.
They have mostly left the mod to me since the Factorio 2.0 release, but they have dropped a few goodies since then (upgraded graphics, etc)
Anyhow, it appears in 1.2.22 he intentionally removed those structures. Doing some historical digging, I found notes from back in 2016 where he had mentioned these were only ever supposed to be temporary structures anyhow... it just took many years to remove them, I guess.
Looking into it, it wouldn't be too hard to bring them back.
Though I guess I would have to pose the question of "why?" What did you use them for? Did something break, balance-wise or otherwise, meaning we have a missing recipe I need to account for elsewhere now?
Im not opposed to it.. just want to understand why.
