It appears the statusbar plugin is causing issues with the iOS webview on small form factor devices (iPhone & iPod) when switching orientation whilst the camera is open (camera opened using cordova camera plugin)
Steps to reproduce:
Start the application and begin using it in landscape
Open the camera using the cordova camera plugin
Whilst the camera is open, rotate into portrait
Close the camera
Webview is now squashed down the left of the screen (only fills about 1/4 of the screens overall width)
Can recover by changing orientation again.
Sample test app on Github:
(tapping on the red square at the top of the test app page should launch the camera)
Removing the statusbar plugin rectifies the issue.