Very strange. As the Cree, I researched Apprenticeship, and immediately built an Industrial district in my two largest cities. But neither city offers me the option to now build the workshop. The Choose Production panel shows Industrial Zone with the gold background and checkmark, indicating built to current capability. Reports screen shows each Industrial Zone with adjacency bonus but no Workshop, so no way I built the workshops and then had a massive brain fart and forgot I had done so. Am I missing some possibility here? Is there some known issue? I cannot remember anything like this before.