Safari/iOS 15 could not see remote video (VP9)

I noticed, after installing iOS15, the participant using Safari could not see video from others using VP9 (chrome/desktop).

Safari 15 now has VP9 (profile 0) enabled by default (both desktop and mobile) and I verified using RTCRtpReceiver.getCapabilities('video') and checking the chrome is sending vp9.

I tried looking at the commit history and searched around in the community but didn’t see anything related to safari+vp9 so I’d like to see if the team has any insight.

BTW, I tested using