Version 31.0.1650.48 beta-m, Windows 7 

Connecting two StreamSource nodes to the same stream doesn't work.

In more detail:

navigator.getUserMedia({audio:true}, gotAudio, error)
   returns the same stream each time it is called. I suppose this is correct behavior. 

But if you connect two "microphone nodes" to that single stream:

var mic1, mic2;
function gotAudio(stream) {
   mic1 = audioContext.createMediaStreamSource(stream);
   mic2 = audioContext.createMediaStreamSource(stream);
}
and then connect both mics to the audio destination, the audio output alternates between buffers of silence and buffers of sound. It is as if one of the mics "consumes" the stream data so that the second gets silence. 


You might ask "why would you want to do that?" Well, this is besides the point as far as the bug is concerned, but it came up because I had two previously-written "sub-graphs" that each grabbed the input audio stream and attached a microphone to it. Then I created a new "meta graph" that cross faded between the two. 

My "work-around" was to create a global microphone (StreamSource) node, create it only once, and use it again if it already exists.