Bug 308939

Summary:	Preserve navigatedFrameID in session state for correct child frame back/forward navigation .
Product:	WebKit	Reporter:	Basuke Suzuki <basuke>
Component:	New Bugs	Assignee:	Basuke Suzuki <basuke>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Basuke Suzuki

Reported 2026-03-01 16:51:21 PST

When session state is restored via _restoreSessionState:andNavigate:, the BackForwardList is rebuilt from serialized data. However, the navigatedFrameID was not preserved. restoreFromState() always set it to the main frame's FrameIdentifier, causing goBack()/goForward() to reload the entire page instead of navigating only the child frame.

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Basuke Suzuki

Comment 1 2026-03-01 16:57:51 PST

rdar://149987127

Basuke Suzuki

Comment 2 2026-03-01 17:04:01 PST

Pull request: https://github.com/WebKit/WebKit/pull/59684

EWS

Comment 3 2026-03-02 18:26:34 PST

Committed 308501@main (a58aaf679b91): <https://commits.webkit.org/308501@main> Reviewed commits have been landed. Closing PR #59684 and removing active labels.

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