For some reason, errors contain correct file links from the source maps, but exceptions do not (in Chrome). I created an [example project]( https://github.com/strobe/scalajs-exception-sourcemaps-issue/blob/main/client/src/main/scala/com/example/scalajsplayexceptionstest/ScalaJSExample.scala ) based on https://github.com/vmunier/play-scalajs.g8 from https://www.scala-js.org/libraries/skeletons.html to demonstrate issue. The client app simply throws an Error and an Exception at startup. In the Chrome console, there's a clear difference in how errors and exceptions are displayed:  I'm experiencing a similar issue in a mid-sized project based on mill, and I haven't been able to find any configuration changes that fix it. Is this expected behavior?