I only have one iOS phone. This is the iphone 6s 15.8.2 version. So I take two empty projects with one sprite on the layout and check it through remote preview. One project is r397-2 and it works, and the second is r407 and there's just a black screen after loading.
UPD: I rechecked the old releases and the project breaks on r399. It just shows a black screen. The game works until r399.
Ashley Can you check it out?