Autolayout crash when applying transform: Assertion failure in -[layoutSublayersOfLayer:]

I have a custom view that display a UILabel in the bottom right corner. The view is setup in a method called from both `initWithCoder:` and `initWithFrame:` like this: ``` MCLabel* likesLabel = [[MCLabel alloc] init]; likesLabel.mc_textPadding = UIEdgeInsetsMake(0, 10, 0, 10); likesLabel.font = [UIFont fontWithName:@"FontAwesome" size:12.f]; [likesLabel setText:@"test"]; likesLabel.numberOfLines = 2; likesLabel.backgroundColor = [UIColor colorWithWhite:1 alpha:.8]; likesLabel.textColor = UIColor.blackColor; likesLabel.translatesAutoresizingMaskIntoConstraints = NO; likesLabel.textAlignment = NSTextAlignmentCenter; likesLabel.mc_verticalTextAlignment = MCVerticalTextAlignmentTop; [self addSubview:likesLabel]; self.likesLabel = likesLabel; NSLayoutConstraint* widthConstraint = [NSLayoutConstraint constraintWithItem:likesLabel attribute:NSLayoutAttributeWidth relatedBy:NSLayoutRelationEqual toItem:self attribute:NSLayoutAttributeWidth multiplier:1 constant:1]; NSLayoutConstraint* heightConstraint = [NSLayoutConstraint constraintWithItem:likesLabel attribute:NSLayoutAttributeHeight relatedBy:NSLayoutRelationEqual toItem:likesLabel attribute:NSLayoutAttributeWidth multiplier:2/5.f constant:1]; NSLayoutConstraint* horizontalPosition = [NSLayoutConstraint constraintWithItem:likesLabel attribute:NSLayoutAttributeCenterX relatedBy:NSLayoutRelationEqual toItem:self attribute:NSLayoutAttributeRight multiplier:1 constant:1]; NSLayoutConstraint* verticalPosition = [NSLayoutConstraint constraintWithItem:likesLabel attribute:NSLayoutAttributeCenterY relatedBy:NSLayoutRelationEqual toItem:self attribute:NSLayoutAttributeBottom multiplier:1 constant:1]; [likesLabel addConstraints:@[heightConstraint]]; [self addConstraints:@[widthConstraint, horizontalPosition, verticalPosition]]; ``` Now if I leave everything like this I do not have any kind of problem but, as soon as I apply a transform to this label (that is a subclass of UILabel that simply add vertical alignment and edge insets if that matters) the app crashes with the error in console: ``` *** Assertion failure in -[MCView layoutSublayersOfLayer:], /SourceCache/UIKit/UIKit-2935.138/UIView.m:8794 Auto Layout still required after executing -layoutSubviews ``` The assertion hints that probably the subclass didn't call `[super layoutSubviews]` when overriding the methods but I did. Since is clear that the problem here is the autolayout setup I'm afraid that I'm overlooking at something and maybe the layout is ambiguous hence the crash. One more note: the same code does not crash on iOS 8 if I move the transform in the `- (void)didMoveToSuperview` method. Anyone that can helps here?