QGstreamerRecorderControl::stop() gets stuck

I just installed the latest Qt-5.13.0 via Qt Maintenance Tool and my simple application get stuck on QAudioRecorder::stop()

https://github.com/Ri0n/qite

The same happens with Qt-5.9.5.

Seems like the problem is related to Ubuntu 18.04 LTS since I tested by code also on OpenSUSE Tumbleweed and it works fine there.

Basically the algo is

1. create QAudioRecorder on heap and init it with local file location
2. call record()
3. wait a bit
4. call stop()

Also duration() always returns 0 but it's a topic for another report.