Dart pub serve ignores URL parameters on redirect in 2017.2

I start my Dart project using a JavaScript Debug configuration with an URL with parameters, something like http://localhost:8090/my/project/index.html?a=1&b=2

After upgrading to 2017.2 there is a redirect being done on startup. (As it should, according to the documentation: https://www.jetbrains.com/help/idea/running-and-debugging-dart-web-applications.html)

The problem for me is that the parameters (?a=1&b=2) are not in the redirected URL, which looks something like http://localhost:50641/index.html.

Is this a bug or has the option to specify parameters like this been deliberately removed?