260310 2023-08-16 15:07:43 -0700 REGRESSION(266775@main): [ iOS ] 2 tests under imported/w3c/web-platform-tests/css/cssom-view/ (scrollIntoView-sideways-rl-writing-mode-and-rtl-direction.html and scrollIntoView-sideways-rl-writing-mode.html) are constant text failures. 2026-04-06 11:52:27 -0700 1 1 1 Unclassified WebKit Text WebKit Nightly Build Unspecified Unspecified NEW https://bugs.webkit.org/show_bug.cgi?id=260012 InRadar P2 Normal --- 1 ben_schwartz webkit-unassigned mmaxfield ntim simon.fraser webkit-bot-watchers-bugzilla webkit-bug-importer zalan oldest_to_newest 1971643 0 ben_schwartz 2023-08-16 15:07:43 -0700 imported/w3c/web-platform-tests/css/cssom-view/scrollIntoView-sideways-rl-writing-mode.html imported/w3c/web-platform-tests/css/cssom-view/scrollIntoView-sideways-rl-writing-mode-and-rtl-direction.html These tests are constant failures on iOS 16. HISTORY: https://results.webkit.org/?suite=layout-tests&suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcssom-view%2FscrollIntoView-sideways-rl-writing-mode.html&test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcssom-view%2FscrollIntoView-sideways-rl-writing-mode-and-rtl-direction.html TEXT DIFF (both equivalent): -PASS scrollIntoView({"block":"start","inline":"start"}) -PASS scrollIntoView({"block":"start","inline":"center"}) -PASS scrollIntoView({"block":"start","inline":"end"}) -PASS scrollIntoView({"block":"center","inline":"start"}) -PASS scrollIntoView({"block":"center","inline":"center"}) -PASS scrollIntoView({"block":"center","inline":"end"}) -PASS scrollIntoView({"block":"end","inline":"start"}) -PASS scrollIntoView({"block":"end","inline":"center"}) -PASS scrollIntoView({"block":"end","inline":"end"}) +FAIL scrollIntoView({"block":"start","inline":"start"}) assert_approx_equals: scrollX expected -200 +/- 0.5 but got -185 +FAIL scrollIntoView({"block":"start","inline":"center"}) assert_approx_equals: scrollX expected -200 +/- 0.5 but got -185 +FAIL scrollIntoView({"block":"start","inline":"end"}) assert_approx_equals: scrollX expected -200 +/- 0.5 but got -185 +FAIL scrollIntoView({"block":"center","inline":"start"}) assert_approx_equals: scrollX expected -157.5 +/- 0.5 but got -143 +FAIL scrollIntoView({"block":"center","inline":"center"}) assert_approx_equals: scrollX expected -157.5 +/- 0.5 but got -143 +FAIL scrollIntoView({"block":"center","inline":"end"}) assert_approx_equals: scrollX expected -157.5 +/- 0.5 but got -143 +FAIL scrollIntoView({"block":"end","inline":"start"}) assert_approx_equals: scrollX expected -115 +/- 0.5 but got -100 +FAIL scrollIntoView({"block":"end","inline":"center"}) assert_approx_equals: scrollX expected -115 +/- 0.5 but got -100 +FAIL scrollIntoView({"block":"end","inline":"end"}) assert_approx_equals: scrollX expected -115 +/- 0.5 but got -100 DIFF URL (both equivalent): https://build.webkit.org/results/Apple-iOS-16-Simulator-Release-GPUProcess-WK2-Tests/266776@main%20(2149)/imported/w3c/web-platform-tests/css/cssom-view/scrollIntoView-sideways-rl-writing-mode-and-rtl-direction-pretty-diff.html REPRODUCIBILITY: I was able to reproduce this bug on the iOS 16 Simulator ToT running the test as follows: run-webkit-tests --clobber-old-results --ios-simulator --iterations 5 --verbose imported/w3c/web-platform-tests/css/cssom-view/scrollIntoView-sideways-rl-writing-mode-and-rtl-direction.html imported/w3c/web-platform-tests/css/cssom-view/scrollIntoView-sideways-rl-writing-mode.html REGRESSION: I was able to bisect a regression point using the flakiness dashboard. This test reproduced at 266775@main, but it did not reproduce at 266774@main. Changes at 266775@main appear to be directly related to this error, and is likely what caused the failure. 1971644 1 webkit-bug-importer 2023-08-16 15:07:53 -0700 <rdar://problem/113990281> 1971652 2 ews-feeder 2023-08-16 15:14:43 -0700 Test gardening commit 266966@main (facb8c70c640): <https://commits.webkit.org/266966@main> Reviewed commits have been landed. Closing PR #16762 and removing active labels. 2197307 3 simon.fraser 2026-04-06 11:52:27 -0700 These are off by the scrollbar width (15px) because, on iOS, we don't respect the "RTL scrollbars are on the left" preference.