Here is a bug with the game I encountered after bulldozing my city to rebuild everything to try and fix traffic problems. You can see there are absolutely no buildings in my city, yet somehow there is a 39 MW power usage and 31 kgal water usage. This basically just sucks money out of your city since you have to provide more power and water than what your city actually needs.
You can also see that somehow there are 11,000 some empty desks shown on the population panel when there are obviously no schools in my city, and I checked my neighbor's free school desks and the numbers don't add up. Plus the number on the population panel doesn't include neighbor's cities anyways, as evident if you start a new city next to an existing one.
You can also see a large number of freight orders unfulfilled, which makes it so you can never meet the demand for industry.
I let the city sit like this for several minutes to make sure it wasn't because it needed to update.