When I get a stream with getDisplayMedia I get a black screen in a preview video. Also when recording this stream with MediaRecorder, no blobs are made. Example: https://www.webrtc-experiment.com/getDisplayMedia/
Created attachment 432464 [details] Screenshot showing black preview video
Safari version Release 126 (Safari 14.2, WebKit 16612.1.17.10.5)
<rdar://problem/79934146>
This is probably fixed in https://bugs.webkit.org/show_bug.cgi?id=226874
@Michiel, please verify this in next available STP (127 does not have this fix yet). *** This bug has been marked as a duplicate of bug 226874 ***