Been playing some tonight, and I've been seeing odd research issues. In one game, I never was able to get Orchards researched, so I couldn't use the one I had right next to a town.
I've never seen tech for mines or quarries at all, though I see those resources on the map. I had Civilization up to 20 and largely stopped getting new techs, but didn't see anything.
(I've also never seen a Shard of any type in 1g, so I can't really tell how magic is working since I can't seem to cast any spells.)