289018 2025-03-03 15:50:01 -0800 REGRESSION(284785@main): [ iOS ] imported/w3c/web-platform-tests/navigation-api/navigation-methods/return-value/back-204-205-download.html is a flaky failure. 2025-03-03 16:41:02 -0800 1 1 1 Unclassified WebKit Page Loading WebKit Nightly Build Unspecified Unspecified NEW InRadar P2 Normal --- 1 y_karimi webkit-unassigned beidson rbuis webkit-bot-watchers-bugzilla webkit-bug-importer oldest_to_newest 2100072 0 y_karimi 2025-03-03 15:50:01 -0800 imported/w3c/web-platform-tests/navigation-api/navigation-methods/return-value/back-204-205-download.html This test is a flaky failure (very consistent though) on iOS. HISTORY: https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fnavigation-api%2Fnavigation-methods%2Freturn-value%2Fback-204-205-download.html TEXT DIFF: @@ -1,6 +1,6 @@ -FAIL back() promises to 204s never settle assert_unreached: onunload should not be called Reached unreachable code +PASS back() promises to 204s never settle FAIL back() promises to 205s never settle assert_unreached: onunload should not be called Reached unreachable code PASS back() promises to Content-Disposition: attachment responses never settle DIFF URL: https://build.webkit.org/results/Apple-iPadOS-18-Simulator-Release-WK2-Tests/291510@main%20(485)/imported/w3c/web-platform-tests/navigation-api/navigation-methods/return-value/back-204-205-download-pretty-diff.html REPROUCIBILTY: I was able to reproduce this issue on the iOS 18.2 simulator at ToT using the following command: run-webkit-tests --ios-simulator --child-processes 2 -f imported/w3c/web-platform-tests/navigation-api/navigation-methods/return-value/back-204-205-download.html --iterations 5 REGRESSION: According to contextual information, the probable regression point is 284785@main. The code paths changed in this commit appear to be related to the observed regression test failure. This shows the regression more clearly: https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fnavigation-api%2Fnavigation-methods%2Freturn-value%2Fback-204-205-download.html&platform=ios&recent=false&version_name=iOS%2018&version_name=iOS%2017 2100073 1 webkit-bug-importer 2025-03-03 15:50:13 -0800 <rdar://problem/146059202> 2100080 2 ews-feeder 2025-03-03 16:03:37 -0800 Test gardening commit 291531@main (ed06a0166d23): <https://commits.webkit.org/291531@main> Reviewed commits have been landed. Closing PR #41815 and removing active labels.