WKWebView displays content wrong after orientation change

# Bug Report
WKWebView displays content html css wrong after orientation change
## Problem
I'm using cordova ios@6.1 for WKWebView to display a page css js. When the app starts up, it shows the view correctly, no matter what orientation it is currently in. However, once I change the orientation the view will either look zoomed in or has whitespace below the the page and position wrong and size.
am using IPAD

### What is expected to happen?
when oriantation change , i get the view correctly like i getted in ios@5.1.0 and in browser

### What does actually happen?

displays content wrong after orientation change

## Information
cordova-ios@6.1.0

### Environment, Platform, Device
IPAD
macbook pro
xcode

Start by reproducing the layout on an iPad with cordova-ios@6.1.0 and a WKWebView, rotating after launch. Compare the view before and after orientation changes; done means the HTML/CSS/JS content retains the correct size and position without zooming or extra whitespace.

Written by the indexing model from the issue text.