UIToolBar buttons displaying partly off screen for iPhone 6

I have a UIView that contains a UIToolBar with two UIButtons and a Flexible space inbetween. For some weird reason on the iPhone 6 and 6Plus but not on any other model of iPhone the left and right UIButton in the UIToolBar appear to be displaying half on and half off of the screen.

Here is an example of the issue I am having for the iPhone 6 / 6Plus

And here is the way it looks on every other i device

Here is the code I am using to create the UIToolBar, Buttons and Label.

UILabel *toolBarLabel = [[UILabel alloc] initWithFrame:CGRectMake((ScreenWidth -  150.0) / 2, 3.0, 150.0, 40.0)];
toolBarLabel.font = [UIFont boldSystemFontOfSize:16.0];
toolBarLabel.textColor = [UIColor whiteColor];
toolBarLabel.textAlignment = NSTextAlignmentCenter;
toolBarLabel.backgroundColor = [UIColor clearColor];
toolBarLabel.text = @"Calculator";

prefToolBar = [[UIToolbar alloc] init];
[prefToolBar setTranslucent:NO];
prefToolBar.clipsToBounds = YES;
[[UIToolbar appearance] setBarTintColor:[UIColor colorWithRed:colorController.oRed/255.0 green:colorController.oGreen/255.0 blue:colorController.oBlue/255.0 alpha:1.0]];
[prefToolBar addSubview:toolBarLabel];

// add buttons
// create an array for the buttons
NSMutableArray* BarbuttonsArray = [[NSMutableArray alloc] initWithCapacity:5];

// create a Cancel button
UIBarButtonItem * cancelButton = [[UIBarButtonItem alloc] initWithTitle:@"Close"
                                                                  style:UIBarButtonItemStylePlain
                                                                 target:self
                                                                 action:@selector(closeUIButton)];

cancelButton.style = UIBarButtonItemStylePlain;
cancelButton.tintColor = [UIColor whiteColor];
[BarbuttonsArray  addObject:cancelButton];

UIBarButtonItem *flexible = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
[BarbuttonsArray addObject:flexible];

// create a submitButton
saveButton = [[UIBarButtonItem alloc]initWithTitle:@"Search"
                                                               style:UIBarButtonItemStylePlain
                                                              target:self
                                                              action:@selector(submitButton)];
saveButton.style = UIBarButtonItemStylePlain;
saveButton.tintColor = [UIColor whiteColor];
[BarbuttonsArray  addObject:saveButton];

// put the BarbuttonsArray in the toolbar and release them
[prefToolBar setItems:BarbuttonsArray  animated:NO];

UIView *frameToolbar = [[UIView alloc] initWithFrame:CGRectMake(0.0, 44.0, ScreenWidth, 0.5)];
frameToolbar.backgroundColor = [UIColor lightGrayColor];
[prefToolBar addSubview:frameToolbar];

UPDATE

Just adding the method I am using to return screen Width and Height, for further information on what I am doing.

@implementation calcScreenSize
+(CGFloat)screenWidth {
    if(UIInterfaceOrientationIsPortrait([UIApplication sharedApplication].statusBarOrientation)){
        return [UIScreen mainScreen].bounds.size.width;
    }else
        return [UIScreen mainScreen].bounds.size.height;

}

+(CGFloat)screenHeight {
    if(UIInterfaceOrientationIsPortrait([UIApplication sharedApplication].statusBarOrientation)){
        return [UIScreen mainScreen].bounds.size.height;
    }else
        return [UIScreen mainScreen].bounds.size.width;
}

Okay so I am still yet to find a reason for this happening on only the iPhone 6 and 6plus. However I have come up with a solution for myself, which effectivly puts padding in front of the left button and behind the right button..

I have a class tha returns the platform of the device and then use that to check if I need to insert these UIBarButtonSystemItemFixedSpace buttons to padd the visible buttons.

code is as follows.. this was the best I could do after hours of reading and coming up empty handed. I hope this helps anyone who happens to recive this error.

platformCalculator = [[PlatformCalculator alloc] init];
NSString *currentPlatform = [platformCalculator platformNiceString];


if (([currentPlatform isEqual:@"IPHONE 6"]) || ([currentPlatform isEqual:@"IPHONE 6PLUS"])) {
    UIBarButtonItem *positiveSeparator = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
    positiveSeparator.width = 15;

    [BarbuttonsArray addObject:positiveSeparator];
}



if (([currentPlatform isEqual:@"IPHONE 6"]) || ([currentPlatform isEqual:@"IPHONE 6PLUS"])) {
    UIBarButtonItem *negativeSeparator = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
    negativeSeparator.width = 15;

    [BarbuttonsArray addObject:negativeSeparator];
}