Screen floating on iphone

Im using an iphone 5s to test my xplatform apps. All seems well but the screen floats when i scroll like floats all over the show, over scrolls in a way,and moves from side to side, is it an iphone software thing? anything i can do on thunk? Android the screen is fixed and scrolls fine and straight…mind you that this 5s screen is much smaller??

This is strange. My scrolling screen works well (iPhone 5 and 6)

Sorted it out thanks!! minorproblem