Created attachment 467016 [details] text-overflow-028-actual Description: imported/w3c/web-platform-tests/css/css-ui/text-overflow-028.html The test was added at 202007@main, but no way to tell for sure if it has been a consistent failure since then. This test has been failing since iOS 13, as far back in the dashboard history as 216269@main on 10/10/2019. This issue can be reproduced using command: run-webkit-tests --release --iterations=1 --force --ios-simulator imported/w3c/web-platform-tests/css/css-ui/text-overflow-028.htm History: https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcss-ui%2Ftext-overflow-028.html&platform=ios&limit=50000&recent=false Diff 0.01% image difference. *Diff images attached*
Created attachment 467017 [details] text-overflow-028-diff
Created attachment 467018 [details] text-overflow-028-expected
<rdar://problem/112051313>
I have marked this test as a consistent image failure while this issue is investigated.
Test gardening commit 265932@main (c2ba4be918b3): <https://commits.webkit.org/265932@main> Reviewed commits have been landed. Closing PR #15722 and removing active labels.
This test used to be marked as failing, but the expectation was removed in 263428@main. And it already has fuzziness, attempting to cover for what appears to be an actual bug - we should be able to render the same text twice without differences.
> And it already has fuzziness, attempting to cover for what appears to be an > actual bug - we should be able to render the same text twice without > differences. we should, however due to our current run handling/painting, "foobar" does not always pixel-perfect match <span>foo</span><span>bar</span> where individual glyph(s) may slightly move (we have a bug on this somewhere) ("<bdo dir=rtl>ABCDEF</bdo> 123456" vs. "…56 FEDCBA" in text-overflow-28.html)