Hey, I recently got the same problem. It will work if you add
autoPlay={true} playsInline={true} muted={true}
as arguments to your video element, since the problem is not caused by getUserMedia, but from the video element. The code should look like this:
<video
autoPlay={true}
playsInline={true}
muted={true}
ref={videoRef}></video>
videoRef is of course your personal ref in your code.
Hope it helps everyone that has the same problem!