title: Scala Intellij breakpoints ignored
body: <p>I am doing the Scala introductory course from Coursera.</p>
  
  <p>Within Intellij, I am trying to debug but breakpoints are ignored.</p>
  
  <p>Unlike in this question: <a href="https://stackoverflow.com/questions/17418047/cant-debug-a-scala-application-in-intellij-sbt-idea-plugin">Can&#39;t debug a Scala application in IntelliJ + sbt-idea-plugin</a>, I am not getting any error.</p>
  
  <p>Do I need to install something or set some Intellij configurations?</p>