WebStorm debugger don't wait on breakpoints

WebStorm version is 6.0.1 Build#WS-127.122
OS : osx 10.8.2
nodejs version : 0.10.7 (64bit)


Following is code

var async = require('async');


var isResolved = false;   // 1's breakpoint


async.series([
    function (callback){
        console.log('First Function');
        console.log('before');           // 2's breakpoint
        isResolved = true;
        callback(null, 0);
    },
    function (callback){
        console.log('Second Function');
        console.log('isResolved = ' + isResolved); // 3's breakpoint
        callback("haha", 0);
    },
    function (callback){
        console.log('Third Function');
        callback(null, 0);
    }
], function (error, result)
{
    console.log('Finish : ' + error);
});

I run above code with debug mode. then debugger wait on 1's breakpoint.

I run above code with debug mode after remove 1's breakpoint. then debugger don't wait.

What is problem? Let me know, please. Thank you for reading.