Cannot update super scrollview scrollIndicatorInsets when showing keyboard.

[TonyAnhTran]

My controller use a scrollview as super view, so I got this issue while I add VenTokenField as subview to my controller: the method to scroll scrollview not work while showing keyboard with VenTokenField (other kind of textfield work as normal).
_scrollView.contentInset = contentInsets;
_scrollView.scrollIndicatorInsets = contentInsets;