Comment 7 for bug 1535820

Let me reinforce that this issue is not specific to Appear.in (i.e. no "JavaScript parameter problem"). Other sites have the same problem, and the regular desktop browsers display the image correctly.

Test drive:
- https://talky.io/ubuntu-phone
- https://appear.in/ubuntu-phone
- https://webrtc.github.io/samples/src/content/devices/input-output/