imported/w3c/web-platform-tests/webrtc/RTCPeerConnection-setRemoteDescription-replaceTrack.https.html shows the issue.
Created attachment 353790 [details] Patch
Comment on attachment 353790 [details] Patch Clearing flags on attachment: 353790 Committed r237781: <https://trac.webkit.org/changeset/237781>
All reviewed patches have been landed. Closing bug.
<rdar://problem/45791764>