Operating system: Windows 7
Graphics card: Vega 64
Broken: 2.80 Beta 43e7c5dd434 29/11/2018
Worked: 2.79b release
Short description of error
Preview playback of audio strips set to mono don't behave the same way compared to 2.79b.
2.80b renders the audio channels correctly but doesn't preview them the same way as the render.
Exact steps for others to reproduce the error
May require a surround speaker setup
Listen to the playback differences with mono checked and unchecked.