As iOS 17 Beta 5 is just released, we have a good news. The crash has been disappeared on the newest os. Thus, the problem seems to be fixed

We've just tested on: packaged by Xcode 15 Beta and running on iOS 17 beta real device. It works. So, I think there's a compatible problem for iOS 17 Beta? We haven't ready to migrate to Xcode 17, hope this will be fixed in later iOS 17 beta versions.

The problem happens on simulator with iOS 16 for me. But on physical devices, it works as expected, the return of speechVoices is not empty. It may be a bug only on simulator with iOS 16?