iPhone 6 / 6 Pro and 6S / Pro
Issue: I have built layouts with dynamic behavior to deal with different iOS-Devices' display dimensions. This is achieved with some elements anchored Left AND Right, others with No Anchors Left AND Right to have them centered. Works dynamically with iPhone 4, 5S, iPad Mini(1. Generation).
iPhone 6 and newer show a grey box at the right side.
Replicate: Build a layout with a square box anchored Left AND Right, positioned Left= 0px to right layout border.
Work around: none. I would have to build designated layouts for iPhone 6.