Tab Bar issue in iOS 7

AppDelegate.m

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    self.window.backgroundColor = [UIColor whiteColor];
    [self.window makeKeyAndVisible];

    UITabBarController* tabController = [[UITabBarController alloc] init];

    tabController.viewControllers = @[
            [[UINavigationController alloc] initWithRootViewController:[[FirstController alloc] init]],
            [[UINavigationController alloc] initWithRootViewController:[[FirstController alloc] init]]
    ];

    self.window.rootViewController = tabController;

    return YES;
}

@end

FirstController.h

#import <Foundation/Foundation.h>

@interface FirstController : UITableViewController
{
}

@end

FirstController.m

#import "FirstController.h"
#import "SecondController.h"

@implementation FirstController

-(id)init
{
    if( (self = [super init]) )
    {
        self.tabBarItem.title = @"Foo";
        self.tabBarItem.image = [UIImage imageNamed:@"Tab Icon.png"];
    }

    return self;
}

-(NSInteger)tableView:(UITableView*)tableView numberOfRowsInSection:(NSInteger)section
{
    return 1;
}

-(UITableViewCell*)tableView:(UITableView*)tableView cellForRowAtIndexPath:(NSIndexPath*)indexPath
{
    UITableViewCell* cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:nil];

    cell.textLabel.text = @"Click";

    return cell;
}

-(void)tableView:(UITableView*)tableView didSelectRowAtIndexPath:(NSIndexPath*)indexPath
{
    SecondController* controller = [[SecondController alloc] init];

    [self.navigationController pushViewController:controller animated:YES];
}

@end

SecondController.h

#import <Foundation/Foundation.h>

@interface SecondController : UIViewController
{
}

@end

SecondController.m

#import "SecondController.h"

@implementation SecondController

-(id)init
{
    if( (self = [super init]) )
    {
        self.hidesBottomBarWhenPushed = YES;
    }

    return self;
}

-(void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];

    self.view.backgroundColor = [UIColor redColor];
    self.view.clipsToBounds = YES;

    /* ENTER VORTEX OF DESPAIR */

    // without this, there's no gap, but the view continues under the tool 
    // bar; with it, I get the 49-pixel gap thats making my life miserable
    
    self.edgesForExtendedLayout = UIRectEdgeNone;

    /* EXIT VORTEX OF DESPAIR */

    self.navigationController.toolbarItems = @[
            [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemSave target:nil action:nil]
    ];

    self.navigationController.toolbarHidden = NO;
}

-(void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];

    // will log a height of 411, instead of the desired 460
    NSLog(@"frame: %@", NSStringFromCGRect(self.view.frame));
}

@end