This bug actually seems to be getting worse:

as now there is no city at all.
However all is well when the City Details screen is viewed from the zoomed-in, animated strategic map:

Here are some older screenshots I took where no post processing effects are applied to the city in the City Details screen if viewed from the cloth map:

Notice the lack of hexes on the chasm in the background, the missing smoke from the town, and no lighting on the shard

^Viewing the City Details screen while zoomed into the animated strategic map is again ok.