Debug Angular 2 app

Try to debug Angular application (2.4.1)

WebStorm 2017.1.2
Build #WS-171.4249.16, built on April 18, 2017
JRE: 1.8.0_112-release-736-b16 amd64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
Windows 7 6.1

Application structure

Compile gulp task

function compile(prod, src, logfile) {
    var tsProject = typescript.createProject('tsconfig.json', {
        typescript: require('typescript')
    });
    return gulp
        .src('./src/app/**/*.ts')
        .pipe(sourcemaps.init())
        .pipe(tsProject())
        .pipe(sourcemaps.write('.', {
            includeContent: false,
            sourceRoot: '../../src/app/'
        }))
        .pipe(gulp.dest('./dev/app'));
}

gulp browserSync task

gulp.task('serve:dev', ['compileTs', 'watch'], function () {
    var proxy = require('http-proxy-middleware');
    var browserSync = require('browser-sync');
    var modRewrite  = require('connect-modrewrite');

    var apiProxy = proxy('/ui-api/**', {
        target: 'http://localhost:8081',
        changeOrigin: true,
        hostRewrite: true,
        logLevel: 'debug'
    });

    var apiProxyCsv = proxy('/csv/**', {
        target: 'http://localhost:8081',
        changeOrigin: true,
        hostRewrite: true,
        logLevel: 'debug'
    });

    var logoutProxy = proxy('/logout', {
        target: 'http://localhost:8081',
        changeOrigin: true,
        hostRewrite: true,
        logLevel: 'debug'
    });

    var server = {
        baseDir: ["./", "./src", "./dev"],
        index: "index" + options.htmlExt,
        middleware: [apiProxy, apiProxyCsv, logoutProxy, modRewrite([
            '!\\.\\w+$ /index.htm [L]'
        ])
        ]
    };

    var opts = {
        startPath: '/',
        server: server,
        browser: 'default',
        host: '0.0.0.0',
        open: 'true'
    };
    browserSync.instance = browserSync.init(opts);
});

For example full path to ts file: src/app/dir1/dir2/my.component.ts
Map files after compile: dev/app/dir1/dir2/my.component.js.map
and contain something like this: 

{
'version':3, 
'sources': ['dir1/dir2/my.component.ts'], 
'names': [], 
'mappings': ..., 
'file': 'my.component.js', 
'sourceRoot': '../../../../src/app/'
}

Breakpoints in my.component.ts doesn't work. Any ideas? 
In Chrome (58.0.3029.81 (64-bit)) all breakpoints in ts files work 


Sorry for text colors :)