Edit: Tried linking binary WidgetsExtensionEngine.framework as optional in host target, same error. Also tried another branch without WidgetExtension, and setting up another extension to mintarget iOS16, and it also works.

Update: Removing our widget engine 's framework from linked libraries in our host target solved the issue.

@eskimo Yes, that's how we discovered that bug. An user reported the crash while using a TestFlight build on its device. (I can't comment on your reply, my reply disappears as soon as I refresh the page, don't know why)

Same issue here ITMS-90338: Non-public API usage - The app references non-public symbols in Contents/MacOS/<AppName> Flagged symbols: _AVCaptureDeviceSubjectAreaDidChangeNotification, _AVCaptureDeviceTypeBuiltInDualCamera, _AVCaptureDeviceTypeBuiltInDualWideCamera, _AVCaptureDeviceTypeBuiltInTelephotoCamera, _AVCaptureDeviceTypeBuiltInTripleCamera, _AVCaptureDeviceTypeBuiltInUltraWideCamera, _AVCaptureSessionPresetInputPriority