TVCardView's focusSizeIncrease not working?

I'm trying to manipulate the `focusSizeIncrease` property of a `TVCardView` like this:


```

cardView.contentSize = CGSize(width: 200, height: 200)

cardView.focusSizeIncrease = NSDirectionalEdgeInsets(top: -10, leading: -10, bottom: -10, trailing: -10)

```


The value of `focusSizeIncrease` is changed when I read it afterwards, but the new value is ignored.


When I read the property in `shouldUpdateFocus(in: UIFocusUpdateContext)` or `didUpdateFocus(in: UIFocusUpdateContext, with: UIFocusAnimationCoordinator)` it has been changed back to the default `NSDirectionalEdgeInsets(top: -23.0, leading: -23.0, bottom: -23.0, trailing: -23.0)`.


Has anybody got this working?