RESOLVED FIXED279398
[Site Isolation] Cross-site iframes nested within same-site iframes cannot receive mouse events 
https://bugs.webkit.org/show_bug.cgi?id=279398
Summary [Site Isolation] Cross-site iframes nested within same-site iframes cannot re...
Charlie Wolfe
Reported 2024-09-09 17:09:56 PDT
The `passMouseXEventToSubframe()` function is used to send mouse events to local iframes, but it may later hit test to an out-of-process iframe. In such cases, the function must return a `HandleUserInputEventResult` so we can tell the UI process to forward the event.
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Radar WebKit Bug Importer
Comment 1 2024-09-09 17:10:08 PDT
<rdar://problem/135613422>
Charlie Wolfe
Comment 2 2024-09-09 17:11:52 PDT
rdar://135438488
Charlie Wolfe
Comment 3 2024-09-09 17:13:07 PDT
Pull request: https://github.com/WebKit/WebKit/pull/33354
EWS
Comment 4 2024-09-09 21:36:41 PDT
Committed 283389@main (1656a6f556cd): <https://commits.webkit.org/283389@main> Reviewed commits have been landed. Closing PR #33354 and removing active labels.
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