Hi Team, While going through Blink's commit, came across another supported only by IE11 & WebKit but not by Gecko and later also dropped by Blink. So in short, this only exist now in WebKit (since IE11 is not supported). Blink Commit - https://chromium.googlesource.com/chromium/blink/+/b2b8bf0c463acc5f01ae0d7a2f63df72cd6e95fd WebKit Source (example) - https://github.com/WebKit/WebKit/blob/e961efa584fb8555060d8ee475821a073b372e56/Source/WebCore/html/HTMLFrameElement.idl#L38 Just wanted to raise this bug so we can track and remove this to align with other browser engines. Thanks!
<rdar://problem/103893465>
Committed 258573@main (38a2ac2c30f9): <https://commits.webkit.org/258573@main> Reviewed commits have been landed. Closing PR #8185 and removing active labels.