Doesn't seem to work for me - tried in both Firefox and Chromium and I can see the waveform when I talk but the transcription just shows "Awaiting audio input".

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starkgoose 42 minutes ago | parent | next [-]

Try disabling CSP for the page

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codethief an hour ago | parent | prev [-]

Same here. In Chromium I don't even see the waveform.

	▲	fragmede an hour ago \| parent [-]
		I had to turn off ad-block to get it to work.