ios - UITableView is 8 points wider than UIViewController -

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i'm adding uitableview uiviewcontroller using interface builder. setting leading, trailing, top , bottom constraints superview margins somehow makes tableview 8 points wider viewcontroller.

here's view hierarchy:

enter image description here

the constraints:

enter image description here

viewcontroller view during runtime using xcode visual debugger:

enter image description here

tableview during runtime using xcode visual debugger:

enter image description here

the 8 points seems suspicious , picture has margins, though i'm not able figure out.

why tableview wider viewcontroller?

enter image description here

uncheck before u give constraint


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