Nested-shadow evidence
These images show the nested-outset fixture from code revision 05ab767061672b68cb619d8934d12cc2e10d27e7. They come from the passing CI run, using its native-wkwebview-pixels and filter-pixels-and-memory artifacts. The native macOS host ran WKWebView on macOS 26.6.2. The portable comparisons ran Chromium and Playwright WebKit on Linux.
Each original PNG is 560 × 440 pixels from a 2× capture of the same 280 × 220 CSS pixel fixture. The comparison figures place these images at their original pixel size on white and add captions outside the panels. No source pixels were resized, retouched or generated. Each panel was verified against the original composited on white, with zero RGB difference. Original alpha is preserved in the source PNGs. File hashes and artifact paths are recorded in provenance.json.
| Actual macOS WKWebView | Published 2.4.3 | PR result in WKWebView |
|---|---|---|
| Original native PNG | Original baseline PNG | Original PR PNG |
| Native Chromium on Linux | Native WebKit on Linux | PR result in Linux WebKit |
|---|---|---|
| Original Chromium PNG | Original WebKit PNG | Original PR PNG |
The figures document an unresolved native rendering difference. They do not claim that the PR is pixel-equivalent to native WebKit. See the design note for measurements and the explicit regression-test exception.