TTS plugin not found on Xcode

Xcode 9.2

osx 10.13.2

It is impossible to use QtTextToSpeech with Xcode, returning the error "no pluging founds", even without sandboxing activated.

Compiling the following code against Qt Creator on the same platform works fine, it seems like an inconsistency between qml and qmlscene.

Melo.7z