Qt: QAudioOutput: Why hangs when playback stops?

Question

Qt

QAudioOutput: Why hangs when playback stops?
I'm trying to make a similar player for a wav file:

QAudioFormat audioFormat;
//выставляю параметры для формата 

QAudioOutput* audioIn = new QAudioOutput(audioFormat);

further, when the button is clicked, it fires:
audioIn->start(&audioDev);
and the sound goes, then when you press pause:
audioIn->suspend();
and the program freezes , similarly when using ->stop()
How to fix this? And I don’t use QThread (here it seems like you need to do without them somehow)