# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2019-08-31 23:37:30 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/1167944533247586304) In reply to: [@pilky](http://twitter.com/pilky/status/1167943432087592961) @pilky In the real app, on the superview. In the Playground I called it on both the superview and stack view, and the sizes should differ. But if the constraint's constant is changed then they are always the same.