As of macOS 26.4, WKWebView content disappears after 3 seconds when part of a legacy ScreenSaver view hierarchy.

Safari & Web General
pabugeater2 OP
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The title says it all, and I've filed FB FB22353950 that includes an Xcode 26.4 Screen Saver test project, QT movie demonstrating the error, and a PDF with complete steps to build and test.

I'm asking here just to learn if this sounds familiar. The SS built on 26.4 fails in 26.4, works fine on 26.3.1. I'll supply the test files if there's interest. Thanks.

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As of macOS 26.4, WKWebView content disappears after 3 seconds when part of a legacy ScreenSaver view hierarchy.
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