Bug 318155 – [iOS] TestWebKitAPI.PasteHTML.DoesNotTransformColorsOfLightContent is flaky failure on EWS bots

• Status: NEW
• Component: New Bugs

[Marta Darbinyan]

The following test is flaky on EWS bots on iOS API queue.

TestWebKitAPI.PasteHTML.DoesNotTransformColorsOfLightContent


06:05:37.255 3937     TestWebKitAPI.PasteHTML.DoesNotTransformColorsOfLightContent
06:05:37.255 3937         2026-06-29 05:21:03.585 TestWebKitAPI[23968:251975] Encountered error: Error Domain=WKErrorDomain Code=4 "A JavaScript exception occurred" UserInfo={WKJavaScriptExceptionLineNumber=1, WKJavaScriptExceptionMessage=TypeError: null is not an object (evaluating 'rich.querySelector('span').style'), WKJavaScriptExceptionColumnNumber=27, WKJavaScriptExceptionSourceURL=file:///Volumes/Data/worker/API-Tests-iOS-Simulator-EWS/build/WebKitBuild/Release-iphonesimulator/TestWebKitAPIResources.bundle/rich-color-filtered.html, NSLocalizedDescription=A JavaScript exception occurred} while evaluating script: rich.querySelector('span').style.color
06:05:37.255 3937         
06:05:37.255 3937         /Volumes/Data/worker/iOS-26-Simulator-Build-EWS/build/Tools/TestWebKitAPI/Helpers/cocoa/TestWKWebView.mm:629
06:05:37.255 3937         Value of: !error
06:05:37.255 3937           Actual: false
06:05:37.255 3937         Expected: true
06:05:37.255 3937         
06:05:37.255 3937         
06:05:37.255 3937         
06:05:37.255 3937         /Volumes/Data/worker/iOS-26-Simulator-Build-EWS/build/Tools/TestWebKitAPI/Tests/WebKit/WKWebView/PasteHTML.mm:537
06:05:37.255 3937         Expected equality of these values:
06:05:37.255 3937           [webView stringByEvaluatingJavaScript:@"rich.querySelector('span').style.color"]
06:05:37.255 3937             Which is: "(null)"
06:05:37.255 3937           @"rgb(101, 101, 101)"
06:05:37.255 3937             Which is: "rgb(101, 101, 101)"
06:05:37.255 3937 
06:05:37.255 3937     TestWebKitAPI.SiteIsolation.NavigateFrameWithSiblingsBackForward
06:05:37.256 3937 Testing completed, Exit status: 3

Test results:
https://ews-build.webkit.org/#/builders/13/builds/145502
https://ews-build.webkit.org/#/builders/13/builds/144321

Test history:
https://results.webkit.org/?suite=api-tests&test=TestWebKitAPI.PasteHTML.DoesNotTransformColorsOfLightContent

[Radar WebKit Bug Importer]

<rdar://problem/180965366>

[EWS]

Test gardening commit 316075@main (e5f14b7b33b2): <https://commits.webkit.org/316075@main>

Reviewed commits have been landed. Closing PR #68132 and removing active labels.