It autosaved on the turn, so load the save, set an economic policy and CTD. I tried with 4 different policies so I assume it happens on all of them, but it's possible that it's just the adjacency/building yield policies.
Prince, T264, Continents, Germany, Current version as of the day of this post.
Prince, T264, Continents, Germany, Current version as of the day of this post.