288162 2025-02-20 16:52:14 -0800 [Site Isolation] Session restore in a new WKWebView breaks when restoring from an existing WKWebView 2025-02-21 15:27:40 -0800 1 1 1 Unclassified WebKit History WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 charliew charliew webkit-bug-importer oldest_to_newest 2096564 0 charliew 2025-02-20 16:52:14 -0800 There's logic in WebPageProxy::goToBackForwardItem to send FrameState to the right frame process, but we didn’t check if the frame actually belonged to the current page. So, after restoring session state from another WKWebView, we could end up trying to send FrameState to a process belonging to a different page. We should make sure the frame belongs to the current page before sending IPC to its process. 2096565 1 webkit-bug-importer 2025-02-20 16:52:25 -0800 <rdar://problem/145257058> 2096566 2 charliew 2025-02-20 16:53:06 -0800 Pull request: https://github.com/WebKit/WebKit/pull/41026 2096908 3 ews-feeder 2025-02-21 15:27:38 -0800 Committed 290832@main (5fb0bc3dd426): <https://commits.webkit.org/290832@main> Reviewed commits have been landed. Closing PR #41026 and removing active labels.