Created attachment 242099 [details] A screencast Unable to open a JS file in Debugger on http://todomvc.com/examples/backbone/ (and possibly any other web page). Note that opening JS files in Resources works well. See the attached screencast.
<rdar://problem/19066191>
Steps to reproduce (in case the screencast doesn’t work for you): 1. Open http://todomvc.com/examples/backbone/ 2. Go to Resources tab 3. Open base.js (or any other JS) 4. Go to Debugger tab Expected: Debugger shows base.js Actual: Debugger shows index.html
*** This bug has been marked as a duplicate of bug 139526 ***