ios - Why do the layout positions change in preview when I simply add a new screen size to the preview screen? -

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i have 4 inch screen displayed in assistant editor preview while i'm adding constraints view controller in storyboard. once situated in correct position constraints , layout looks on 4 inch screen, add screen size preview window. reason, adding screen size preview window causes layout preview on 4 inch screen changed. odd behavior or doing wrong?

i had similar issue, instead 4.7 inch screen size. found using 2 things helped me keep layout , constraints consistent across screen sizes.

first, keep storyboard default layout universal (square) constraints aren't applied 1 screen size only.

second, when setting constraints, use "reset suggested constraints" button located on third constraints tab.

i have yet experience layout issues using method. hope helps!


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