Loading controller not working properly in the latest nightly

[Sh1d0w]

Ionic version: (check one with "x")
[ ] 1.x
[ x ] 2.x

I'm submitting a ... (check one with "x")
[ x ] bug report
[ ] feature request
[ ] support request => Please do not submit support requests here, use one of these channels: https://forum.ionicframework.com/ or http://ionicworldwide.herokuapp.com/

Current behavior:

When you create and dismiss two loading components one after another, the second one is never dismissed, no matter if you use .dismiss() or .dismissAll()

Expected behavior:

The loading component is dismissed properly.

Steps to reproduce:

1. npm install ionic-angular@nightly

Related code:

    let loading = this.loadingCtrl.create({});
 
    loading.present();
 
    loading.dismiss();

    let loading2 = this.loadingCtrl.create({});
 
    loading2.present();
 
    loading2.dismiss();

This was working ok on stable 2.1.0

Other information:

Ionic info: (run ionic info from a terminal/cmd prompt and paste output below):

Your system information:

Cordova CLI: 6.4.0 
Ionic Framework Version: 2.1.0-201703032024
Ionic CLI Version: 2.2.1
Ionic App Lib Version: 2.2.0
Ionic App Scripts Version: 1.1.4
ios-deploy version: 1.9.0 
ios-sim version: 5.0.13 
OS: macOS Sierra
Node Version: v7.7.1
Xcode version: Xcode 8.2.1 Build version 8C1002

[manucorporat]

Regression introduced by this change:
5a4c609#diff-4fbdcb4f2c1fdfa3a66827a1377c351bL223

[ionitron-bot]

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