title: Visual Studio Do not open new browser instance
body: <p>when I try to run a web application in visual studio 2017RC on windows 10, it opens a new browser instance(in my case chrome). I've tried also with internet explorer, situation is same, and browser not signed in, but if I just manually run chrome it is signed in.
  How to prevent visual studio to run a new browser instance on each time I run web application? When I press run website it should be opened in same window as previous application(just next tab)</p>