In newer versions of selenium webdriver for chrome (selenium 3), the library is managed by Google and you can expect it to work properly.
If you want to start your window maximized, use the following command:
ChromeOptions MyOptions = new ChromeOptions(); MyOptions.addArgument("--start-maximized"); MyDriver = new ChromeDriver(MyOptions);
An even simpler approach is to use a webdriver built-in action:
In this approach you may have to set the position of the browser before maximizing: