How long can that go on before all hell breaks loose? We truly are less than a third-world country if we can't even run an election cleanly and smoothly.
Actually, a lot of the “problems” we think we see with voting is simply the result of needing to know things “right away”, meaning we rush preliminary information out to get ahead of the curve, and then we go back and check all the numbers.
In this case, someone maintaining vote counts on an old personal computer simply forgot to include one city’s totals.
In another error, it looked like someone misread a “9” as a “7” on a handwritten sheet.
This is why “official” results are given much later — after they go through the painstaking process of double-checking everything.