I get the following 3 new Xcode log messages with iOS 13 on launch (during application didFinishLaunchingWithOptions). Running on iPhone (not simulator). I assume this is just beta noise?
[TraitCollection] Class _UISheetPresentationController overrides the -traitCollection getter, which is not supported. If you're trying to override traits, you must use the appropriate API.
[TraitCollection] Class _UIRootPresentationController overrides the -traitCollection getter, which is not supported. If you're trying to override traits, you must use the appropriate API.
[TraitCollection] Class UIPopoverPresentationController overrides the -traitCollection getter, which is not supported. If you're trying to override traits, you must use the appropriate API.
i believe you can ignore these as stated in ios 12 beta 2 release notes:
"When running your app from Xcode, you might see console errors about UIKit classes that override the
traitCollection
getter. You can safely ignore these messages for system classes. If you see this error message for your own classes, it likely indicates a real issue for you to fix. (51651561)"