RESOLVED FIXED 288162
[Site Isolation] Session restore in a new WKWebView breaks when restoring from an existing WKWebView 
https://bugs.webkit.org/show_bug.cgi?id=288162
Summary [Site Isolation] Session restore in a new WKWebView breaks when restoring fro...
Charlie Wolfe
Reported 2025-02-20 16:52:14 PST
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.
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Radar WebKit Bug Importer
Comment 1 2025-02-20 16:52:25 PST
<rdar://problem/145257058>
Charlie Wolfe
Comment 2 2025-02-20 16:53:06 PST
Pull request: https://github.com/WebKit/WebKit/pull/41026
EWS
Comment 3 2025-02-21 15:27:38 PST
Committed 290832@main (5fb0bc3dd426): <https://commits.webkit.org/290832@main> Reviewed commits have been landed. Closing PR #41026 and removing active labels.
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