fix.md

When dismissing a view controller on top of a view controller with UIModalPresentationPageSheet or UIModalPresentationFormSheet, the presenting view controllers frame and transform can get miscomputed on iOS 7. Here is a fix I used in SPLSpeechBubblePopoverController:

@implementation UIViewController (SPLSpeechBubblePopoverControllerHack)

+ (void)load
{
    class_swizzleSelector(self, @selector(dismissViewControllerAnimated:completion:), @selector(__SPLSpeechBubblePopoverControllerDismissViewControllerAnimated:completion:));
}

- (void)__SPLSpeechBubblePopoverControllerDismissViewControllerAnimated:(BOOL)flag completion:(void (^)(void))completion
{
    UIViewController *parentViewController = self;
    while (parentViewController.parentViewController) {
        parentViewController = parentViewController.parentViewController;
    }

    BOOL fuckedUpPresentationStyle = parentViewController.modalPresentationStyle == UIModalPresentationPageSheet || parentViewController.modalPresentationStyle == UIModalPresentationFormSheet;
    BOOL transitionWillBeFuckedUp = fuckedUpPresentationStyle && [parentViewController.presentedViewController isKindOfClass:[SPLSpeechBubblePopoverController class]];
    CGAffineTransform correctTransform = parentViewController.view.transform;
    CGRect correctFrame = parentViewController.view.frame;

    [self __SPLSpeechBubblePopoverControllerDismissViewControllerAnimated:flag completion:completion];

    if (transitionWillBeFuckedUp) {
        parentViewController.view.transform = correctTransform;
        parentViewController.view.frame = correctFrame;
    }
}

@end

this bug is valid only for iOS7.0 (fixed in iOS7.1)
Another fix may be presenting QuickLook in pageSheet style