recorder.start().then doesn't work

[smpial]

I want to perform actions after the recorder has started.
I tried await recorder.start(), the result is an infinite wait.
I also tried recorder.start().then(()=>{console.log('recorder started')}), but "recorder started" is only output when I write recorder.stop().
Am I doing something wrong or is this how it should be?

[freelimbs]

You must emit a sound after you start recording, then it'll work. I know, it's ultra unexpected.