I'm trying to show `UIActionSheet` on iPad from button on `UITableViewCell`. It works fine on iOS 7, but not working properly on iOS 8. `UIActionSheet` containts some visual artifacts and I'm getting this warning in console:

```
    Unable to simultaneously satisfy constraints.
        Probably at least one of the constraints in the following list is one you don't want. 
Try this: 
(1) look at each constraint and try to figure out which you don't expect; 
(2) find the code that added the unwanted constraint or constraints and fix it. 
(Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
    (
        "<NSLayoutConstraint:0x79793de0 H:[UIView:0x797a7630(304)]>",
        "<NSLayoutConstraint:0x7a16ae00 UIView:0x7a16ab60.width == _UIAlertControllerView:0x797a9230.width>",
        "<NSAutoresizingMaskLayoutConstraint:0x7a66f2a0 h=--& v=--& H:[UIView:0x7a16ab60(298)]>",
        "<NSLayoutConstraint:0x797a49e0 _UIAlertControllerView:0x797a9230.width >= UIView:0x797a7630.width>"
    )

    Will attempt to recover by breaking constraint 
    <NSLayoutConstraint:0x79793de0 H:[UIView:0x797a7630(304)]>

    Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
    The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.

```

My code:

```
- (void)onFavoriteBtn:(id)sender {
    CGPoint btnPosition = [sender convertPoint:CGPointZero toView:_tableView];
    NSIndexPath *indexPath = [_tableView indexPathForRowAtPoint:btnPosition];
    if (indexPath) {
        UIButton *favoriteBtn = (UIButton *)sender;
        CGRect favoriteBtnRect = favoriteBtn.frame;

        UIActionSheet *sheet = [[UIActionSheet alloc] initWithTitle:nil delegate:nil cancelButtonTitle:@"Cancel" destructiveButtonTitle:@"Remove from Favorites" otherButtonTitles:nil];
        [sheet showFromRect:favoriteBtnRect inView:favoriteBtn.superview animated:true];
    }
}

```