Bug 308562

Summary:	[Site Isolation] Route same-site child frame back/forward navigations through UIProcess when UseUIProcessForBackForwardItemLoading is enabled.
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 2026-02-24 10:48:46 PST

When UseUIProcessForBackForwardItemLoading is enabled and a parent frame performs a back/forward load, intercept child frame URL loading before it falls through to the legacy loadURLIntoChildFrame path.

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Add attachment proposed patch, testcase, etc.

Basuke Suzuki

Comment 1 2026-02-24 15:31:01 PST

rdar://170106309

Basuke Suzuki

Comment 2 2026-02-24 16:41:15 PST

Pull request: https://github.com/WebKit/WebKit/pull/59373

EWS

Comment 3 2026-03-03 22:07:13 PST

Committed 308613@main (212c74a1c63a): <https://commits.webkit.org/308613@main> Reviewed commits have been landed. Closing PR #59373 and removing active labels.

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