Bug 228311 - imported/w3c/web-platform-tests/css/css-scoping/css-scoping-shadow-dynamic-remove-style-detached.html is a flaky failure
Summary: imported/w3c/web-platform-tests/css/css-scoping/css-scoping-shadow-dynamic-re...
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: CSS (show other bugs)
Version: WebKit Nightly Build
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2021-07-26 17:29 PDT by Eric Hutchison
Modified: 2021-07-26 17:35 PDT (History)
5 users (show)

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Description Eric Hutchison 2021-07-26 17:29:03 PDT 
imported/w3c/web-platform-tests/css/css-scoping/css-scoping-shadow-dynamic-remove-style-detached.html

is a flaky failure on Mac.

History: https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcss-scoping%2Fcss-scoping-shadow-dynamic-remove-style-detached.html&limit=50000&platform=mac

Diff:

--- /Volumes/Data/worker/bigsur-debug-tests-wk2/build/layout-test-results/imported/w3c/web-platform-tests/css/css-scoping/css-scoping-shadow-dynamic-remove-style-detached-expected.txt
+++ /Volumes/Data/worker/bigsur-debug-tests-wk2/build/layout-test-results/imported/w3c/web-platform-tests/css/css-scoping/css-scoping-shadow-dynamic-remove-style-detached-actual.txt
@@ -1,3 +1,3 @@
 
-PASS Invalidation of style data while ShadowRoot is disconnected.
+FAIL Invalidation of style data while ShadowRoot is disconnected. assert_not_equals: got disallowed value "rgb(255, 0, 0)"
 

Issue appears to be a regression ~r280122

Reproduced on r280292 using run-webkit-tests -f --iterations 500 --clobber-old-results --exit-after-n-failures 1 imported/w3c/web-platform-tests/css/css-scoping/css-scoping-shadow-dynamic-remove-style-detached.html.

Will bisect and update.
Comment 1 Radar WebKit Bug Importer 2021-07-26 17:30:43 PDT 
<rdar://problem/81138404>
Comment 2 Eric Hutchison 2021-07-26 17:34:51 PDT 
Updated test expectations at https://trac.webkit.org/changeset/280331/webkit.
Comment 3 Radar WebKit Bug Importer 2021-07-26 17:35:06 PDT 
<rdar://problem/81138544>