I am developing an iPad App that will load a webpage in a UIWebView modally when the user is authenticated through a login form. This works great, but when I rotate the device into landscape mode, the webview covers only 75% of the screen:

Here is the code from my login view controller:
// Load storyboard for easy instatiation of the login view controller
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard_iPad" bundle:nil];
WebViewController *webController =
(WebViewController *)[storyboard instantiateViewControllerWithIdentifier:@"WebView"];
// Present the embedded browser in fullscreen.
[webController setModalPresentationStyle:UIModalPresentationFullScreen];
[self presentViewController:webController animated:YES completion: nil];
Are you using constraints or auto-resizing masks? If not, you might want to use them and make sure the web view covers the entire view’s frame.