194425 2019-02-07 20:14:12 -0800 REGRESSION: Layout Test fast/viewport/ios/device-width-viewport-after-changing-view-scale.html is a flaky failure 2019-02-11 09:08:38 -0800 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build Unspecified Unspecified NEW InRadar P2 Normal --- 1 ryanhaddad wenson_hsieh webkit-bot-watchers-bugzilla webkit-bug-importer wenson_hsieh oldest_to_newest 1504092 0 ryanhaddad 2019-02-07 20:14:12 -0800 The following layout test is failing on iOS fast/viewport/ios/device-width-viewport-after-changing-view-scale.html Probable cause: Unknown. Flakiness Dashboard: https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=fast%2Fviewport%2Fios%2Fdevice-width-viewport-after-changing-view-scale.html --- /Volumes/Data/slave/ios-simulator-12-release-tests-wk2/build/layout-test-results/fast/viewport/ios/device-width-viewport-after-changing-view-scale-expected.txt +++ /Volumes/Data/slave/ios-simulator-12-release-tests-wk2/build/layout-test-results/fast/viewport/ios/device-width-viewport-after-changing-view-scale-actual.txt @@ -1,7 +1,7 @@ setViewScale(0.50) -window size: [640, 1096] +window size: [320, 548] square size: [64, 110] -zoom scale: 0.50 +zoom scale: 1.00 setViewScale(0.75) window size: [427, 731] 1504093 1 ryanhaddad 2019-02-07 20:15:32 -0800 This test appears to have recently become a flaky failure on the bots. It has come up as a false positive on EWS a few times in the last two days: https://bugs.webkit.org/buglist.cgi?quicksearch=fast%2Fviewport%2Fios%2Fdevice-width-viewport-after-changing-view-scale.html&list_id=4477417 1504094 2 ryanhaddad 2019-02-07 20:20:53 -0800 I was able to reproduce the failure quickly with: run-webkit-tests --ios-simulator fast/viewport/ios/device-width-viewport-after-changing-view-scale.html --iter 25 --exit-after-n-failures 1 1504095 3 ryanhaddad 2019-02-07 20:22:39 -0800 The earliest failure visible on the dashboard is from 1/21/2019, but the frequency of failures greatly increased on 2/3/2019. 1504881 4 webkit-bug-importer 2019-02-11 09:08:38 -0800 <rdar://problem/47966485>