As already mentioned, you must clear the “Siblings” checkbox in the Resize section of the Xcode 5 storyboard.
The specific purpose of this function is the ability to resize large groups of objects at the same time. For example, let's say you have a Table View and you resize one of the cells. In this case, it looks small, since you just need to resize the Table View Controller, but it will become extremely convenient if you have layered objects such as.
Sorry for the somewhat duplicate answer, but you asked for an explanation of why such a feature was added.
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