This is not a bug but as a web developer I personally expect when debugging stops browser should keep running through IIS Express instance.
Next time, I make change in Visual Studio code then do a build and refresh browser, I’m addicted this way.
In Visual Studio 2012 this was default, but in Visual Studio 2013 as well as Visual Studio 2015 that’s optional. Here is a post if you are still using Visual Studio 2013 http://www.itorian.com/2013/10/iis-express-immediately-shutting-down.html.
In Visual Studio 2015, there is quite a few changes. If you are one and interested in same behavior here is way to enable this.
Navigate to Tool | Options | Debugging | Uncheck ‘Edit and Continue’ option.
