Not all Promises returned

Run the code below:

Code:

    var count = 0,
      promise = new Ext.Promise(),
      syncEngines = ['engine1', 'engine2', 'engine3', 'engine4'],
      syncTimestamps = Ext.space.SecureLocalStorage.get('syncTimestamps'),
      checkDone = function() {
        if(count==syncEngines.length) {
          promise.fulfill(new Date());
        }
      };
    Ext.each(syncEngines, function(engine) {
      console.log('Getting timestamp for: ' + engine);
      syncTimestamps.get(engine).then(function(dt) {
        count++;
        console.log('Promise return: ' + count);
        checkDone();
      });
    });
    return promise;

Here's the result:

Code:

[Log] Getting timestamp for: engine1 (Main.js, line 273)
[Log] Getting timestamp for: engine2 (Main.js, line 273)
[Log] Getting timestamp for: engine3 (Main.js, line 273)
[Log] Getting timestamp for: engine4 (Main.js, line 273)
[Log] Promise return: 1 (Main.js, line 276)
[Log] Promise return: 2 (Main.js, line 276)
[Log] Promise return: 3 (Main.js, line 276)

Never the 4th one back...



Not all Promises returned