ion-select shows all options selected when returning an object (Since v3.1.0)

[dwmit76]

Ionic version: (check one with "x")
[ ] 1.x
[ ] 2.x
[x] 3.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 a ion-select which returns an object, on option selection, it shows all options selected.

Expected behavior:
It should only show the right option selected.

Steps to reproduce:
http://plnkr.co/edit/g6fcC51oYn2rx38LcXzx?p=preview

Other information:
There was no problem with the previous version.

Ionic info:

Cordova CLI: 6.5.0
Ionic Framework Version: 3.1.0
Ionic CLI Version: 2.2.2
Ionic App Lib Version: 2.2.1
Ionic App Scripts Version: 1.3.4
ios-deploy version: Not installed
ios-sim version: Not installed
OS: Windows 10
Node Version: v7.9.0
Xcode version: Not installed

[jgw96]

Thanks for opening an issue with us, i can confirm that this is an issue/breaking change

[ionitron-bot]

Thanks for the issue! This issue is being locked to prevent comments that are not relevant to the original issue. If this is still an issue with the latest version of Ionic, please create a new issue and ensure the template is fully filled out.