I've had this bug happen in several slightly different ways.
1) The tiles around a building i built (An Inn) disappeared and only those tiles, although they were, as above, still usable.
2) All the tiles were completely gone and refused to permanently come back. This happened to both my cities after a while, however the tiles were still usable.
3) The tiles from 2) would temporarily return when i placed a building, but only the tiles around that building and only until i deselected the city/buildings.
I don't have screenshots of this as while trying to figure out jing, I alt-tabbed and elemental black screened with music and windows claimed that it was not responding.