Why is UILongPressGestureRecognizer skipping clicks to UIWebView?

Question

Objective-C

Added UILongPressGestureRecognizer to UIWebView:

UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longTouch:)];
longPress.delegate = self;
longPress.minimumPressDuration = 0.5;
longPress.cancelsTouchesInView = YES;

[_webView addGestureRecognizer:longPress];

cancelsTouchesInView is set to YES, but after a long press, clicks on UIWebView are still triggered, and if the long touch, for example, was on a hyperlink, then after the long touch is triggered, the hyperlink is clicked and another page is loaded in the browser.
How to prevent clicks from passing in UIWebView after UILongPressGestureRecognizer fires?