I am using Xcode 16 RC + iPhone 15 Pro (iOS 18) and a UIDocumentPickerViewController pops up and the interface displays abnormally. Is this a bug in the simulator?
Xcode16 RC simulator displays abnormal pop-up system components
Do you get the same results with just the relevant code in a small test project? If so, please share a link to your test project. That'll help us better understand what's going on. If you're not familiar with preparing a test project, take a look at Creating a test project.
I have a similar issue. RC simulator may have used arm64 API, Have you excluded arm64 SDK for simulator in the build setting? That may cause the problem.
m3 cpu MacOS 15.0 Xcode16 release
same simulator run bug.
but OK for real iPhone device.