iOS 7 UITableView grouped style hide my cells - ios

Question

I have created an UITableView in my app programatically. I have a strange problem. I have never seen this and I think everything is alright. It seems like all the table goes down and I only can see the first row. I want to create the same UITableView grouped as the settings tableViews in iOS7
But the Image in iOS 6 it is strange too.. I have written a NSLog and the height is 132 = 3 items * 44 height cell.
Here it is the code.
static float x = 10.0;
static float y = 80.0;
static NSString *CategoryCellIdentifier = #"CategoryCell";
static float kHeightCell = 44.0;
#interface LKLHomeViewController ()
#property (nonatomic, strong) NSArray *itemsArray;
#property (nonatomic, strong) UITableView *categoryTableView;
#end
#implementation LKLHomeViewController
#synthesize itemsArray;
#synthesize categoryTableView;
- (void)viewDidLoad
{
[super viewDidLoad];
[self.view setBackgroundColor:[UIColor grayColor]];
// Adding tableView to self.view
[self.view addSubview:self.categoryTableView];
}
#pragma mark - Custom getter
-(NSArray *)itemsArray
{
if(!itemsArray){
itemsArray = #[#"Near", #"Kind of" , #"More.."];
return itemsArray;
}
return itemsArray;
}
- (UITableView *)categoryTableView
{
//custom init of the tableview
if (!categoryTableView) {
CGFloat height = kHeightCell * [self.itemsArray count];
CGFloat width = self.view.frame.size.width - (x*2);
CGRect tableFrame = CGRectMake(x, y, width, height);
// regular table view
categoryTableView = [[UITableView alloc] initWithFrame:tableFrame style:UITableViewStyleGrouped];
categoryTableView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
categoryTableView.delegate = self;
categoryTableView.dataSource = self;
categoryTableView.backgroundColor = [UIColor whiteColor];
[categoryTableView setScrollEnabled:NO];
[[categoryTableView layer] setCornerRadius:5.0f];
return categoryTableView;
}
return categoryTableView;
}