Keyboard hide popup on ios

[ghost]

Hi,

I have a weird behavior of the keyboard on ios. The keyboard works fine except for $ionicPopup. In fact, the keyboard hides input and put itself above the popup without scrolling it up ( even <ion-tabs>
don't move up. This problem don't happen on Android.

Ionic info: `ionic info

global packages:

@ionic/cli-utils : 1.5.0
Cordova CLI      : 7.0.1 
Gulp CLI         : CLI version 3.9.1 Local version 3.9.1
Ionic CLI        : 3.5.0

local packages:

@ionic/cli-plugin-cordova : 1.4.1
@ionic/cli-plugin-gulp    : 1.0.2
@ionic/cli-plugin-ionic1  : 2.0.1
Cordova Platforms         : android 6.2.3 ios 4.4.0
Ionic Framework           : ionic1 1.3.0

System:

Node       : v6.5.0
OS         : Linux 4.11
Xcode      : not installed
ios-deploy : not installed
ios-sim    : not installed
npm        : 3.10.3 

`

Plugin version : ionic-plugin-keyboard 2.2.1 "Keyboard"