RESOLVED FIXED 272727
Sometimes the contents of a visibility:hidden iframe become visible 
https://bugs.webkit.org/show_bug.cgi?id=272727
Summary Sometimes the contents of a visibility:hidden iframe become visible
Simon Fraser (smfr)
Reported 2024-04-15 22:04:19 PDT
If an iframe is `visibility:hidden`, we stop compositing it, which allows the contents to be hidden. However, if it's composited for other reasons (e.g. position:fixed) then we can show the contents when they should be hidden.
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Simon Fraser (smfr)
Comment 1 2024-04-15 22:04:31 PDT
<rdar://126178201>
Simon Fraser (smfr)
Comment 2 2024-04-15 22:14:08 PDT
Pull request: https://github.com/WebKit/WebKit/pull/27306
EWS
Comment 3 2024-04-17 17:20:46 PDT
Committed 277643@main (d927d7069616): <https://commits.webkit.org/277643@main> Reviewed commits have been landed. Closing PR #27306 and removing active labels.
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