Running BIAB 2021 build 804 on a Windows 10 laptop. I have a bluetooth speaker which I use to improve the sound. If I run BIAB with the speaker already connected it works fine.

If I run BIAB without the speaker connected it works fine with the internal speakers.

If I then connect the bluetooth speaker I get a message from BIAB saying the default audio device has changed and now I get no sound. If I try and exit BIAB it hangs and I have to kill it.

This didn't happen with the 2018 version I was using before.

Any ideas how to fix this?