208182 2020-02-25 00:08:45 -0800 [GTK] fast/repaint/backgroundSizeRepaint.html is failing since r255477 2026-04-26 06:55:13 -0700 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 dpino dpino webkit-bug-importer oldest_to_newest 1622522 0 dpino 2020-02-25 00:08:45 -0800 Test is failing since r255477 ([Cairo] Use CAIRO_FILTER_BILINEAR for image tile painting with InterpolationQuality::Default https://bugs.webkit.org/show_bug.cgi?id=201326): * fast/repaint/backgroundSizeRepaint.html [ ImageOnlyFailure ] 2183305 1 dpino 2026-02-20 00:35:19 -0800 This test is a flaky test both for WPE and GTK: https://results.webkit.org/?suite=layout-tests&test=fast%2Frepaint%2FbackgroundSizeRepaint.html&platform=GTK&platform=WPE It's possible to reproduce the flaky failure by running the test at least 2 times: ``` $ Tools/Scripts/run-webkit-tests --no-show-results --no-new-test-results --no-sample-on-timeout --results-directory layout-test-results --debug-rwt-logging --no-retry-failures --release --gtk --force --repeat 2 fast/repaint/backgroundSizeRepaint.html ``` When the test fails, the results show that the actual image is not fully completed (compared to the expected image). Introducing a delay of at least 1000 ms before calling `notifyDone`, makes the test always pass (no flakies): ```diff diff --git a/LayoutTests/fast/repaint/backgroundSizeRepaint.html b/LayoutTests/fast/repaint/backgroundSizeRepaint.html index 5c241cb6c6c8..853b42d0e3ad 100644 --- a/LayoutTests/fast/repaint/backgroundSizeRepaint.html +++ b/LayoutTests/fast/repaint/backgroundSizeRepaint.html @@ -12,8 +12,10 @@ { document.getElementById('a').style.height = '40px'; document.getElementById('b').style.height = '60px'; - if (window.testRunner) - testRunner.notifyDone(); + setTimeout(() => { + if (window.testRunner) + testRunner.notifyDone(); + }, 1000); } </script> </head> ``` It doesn't seem other ports need a delay. 2204586 2 dpino 2026-04-26 04:03:19 -0700 Pull request: https://github.com/WebKit/WebKit/pull/63628 2204600 3 ews-feeder 2026-04-26 06:54:51 -0700 Committed 312038@main (a776836d2d8d): <https://commits.webkit.org/312038@main> Reviewed commits have been landed. Closing PR #63628 and removing active labels. 2204601 4 webkit-bug-importer 2026-04-26 06:55:13 -0700 <rdar://problem/175622397>