On Xcode 12 Beta 6, on Simulator, I cannot present a PHPickerViewController. I get the error message:
[Picker] Picker failed with error: Error Domain=PXErrorDomain Code=-1 "PHPickerViewController did timeout." UserInfo={NSDebugDescription=PHPickerViewController did timeout.}
And the view that is presented says, "Picker Unavailable".
This is occurring in an existing app. If I start a new project and copy the presentation code, it works as expected.