Problem with client-side debugging in WebStorm

I’m play with WebStorm for Meteor development and have some problem with debugging.
Server-side debugging works well and I can set breakpoints in my JS files for server-side methods.
Also in WebStorm I have configuration for JS debugging in the Chome (yes I have JetBrains add-on for Chrome debugging installed and browser say something likes “this browser debugged with JetBrains IDE…”).
“Enable JavaScript source maps” option is enabled in Chrome DevTools settings.
But when I debug client-side JS in Chrome I can set breakpoints in the builded App.js only, not im my source JS files.
Help me please - is some settings missed? Maybe problems with source maps or some other?