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rdar://114734606
Pull request: https://github.com/WebKit/WebKit/pull/18076
Committed 268313@main (fb9399777d63): <https://commits.webkit.org/268313@main> Reviewed commits have been landed. Closing PR #18076 and removing active labels.
Re-opened since this is blocked by bug 263035
Resolving this bug fixed for now. The content visibility still causes layout issues which will require either fixing the code or reverting specific changes.