308896 2026-02-28 11:54:44 -0800 Web Inspector: Site Isolation: Page domain getResourceTree across processes 2026-03-04 22:05:32 -0800 1 1 1 Unclassified WebKit Web Inspector WebKit Nightly Build Unspecified Unspecified NEW InRadar P2 Normal --- 306075 1 bburg webkit-unassigned inspector-bugzilla-changes webkit-bug-importer oldest_to_newest 2185862 0 bburg 2026-02-28 11:54:44 -0800 Page.getResourceTree must aggregate frame/resource tree data from all WebProcesses. The tree structure is known in UIProcess (WebFrameProxy hierarchy), but resource details (mimeType, content size, etc.) live in individual WebProcesses. Work items: - IPC from ProxyingPageAgent to each WebProcess to collect resource data - Aggregate fragments into complete tree in UIProcess - Handle race conditions if frames navigate during aggregation - Consider hybrid approach: UIProcess builds tree from WebFrameProxy, fills in resource details from WebProcess responses Radar cross-reference: rdar://157031522 2187228 1 webkit-bug-importer 2026-03-04 22:05:32 -0800 <rdar://problem/171780776>