[Webkit-unassigned] [Bug 245014] New: REGRESSION (252580 at main): [ macOS wk1 ] imported/w3c/web-platform-tests/cookies/value/value-ctl.html is a flaky failure

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=245014

            Bug ID: 245014
           Summary: REGRESSION (252580 at main): [ macOS wk1 ]
                    imported/w3c/web-platform-tests/cookies/value/value-ct
                    l.html is a flaky failure
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: rackler at apple.com

Description:
imported/w3c/web-platform-tests/cookies/value/value-ctl.html

The test was consistently passing until 252580 at main, where it began to flaky fail after a resync web-platform-tests/cookies from upstream 3afcc8cbd5512970bbd079.

Reproduction steps:
I can reproduce this on 254273 at main ToT.

Command: 
run-webkit-tests -1 --exit-after-n-failures 1 --exit-after-n-crashes-or-timeouts 1 --iterations 50 -f --no-retry imported/w3c/web-platform-tests/cookies/value/value-ctl.html

Result: 
Unexpected flakiness: text-only failures (1)
  imported/w3c/web-platform-tests/cookies/value/value-ctl.html [ Failure Pass ]

History:
https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fcookies%2Fvalue%2Fvalue-ctl.html&platform=mac&flavor=wk1

Diff:
--- /Volumes/Data/worker/Apple-Monterey-Release-WK1-Tests/build/layout-test-results/imported/w3c/web-platform-tests/cookies/value/value-ctl-expected.txt
+++ /Volumes/Data/worker/Apple-Monterey-Release-WK1-Tests/build/layout-test-results/imported/w3c/web-platform-tests/cookies/value/value-ctl-actual.txt
@@ -17,7 +17,7 @@
 FAIL Cookie with %xf in value is rejected. assert_equals: The cookie was rejected. expected "" but got "test=15"
 FAIL Cookie with %x10 in value is rejected. assert_equals: The cookie was rejected. expected "" but got "test=16"
 FAIL Cookie with %x11 in value is rejected. assert_equals: The cookie was rejected. expected "" but got "test=17"
-FAIL Cookie with %x12 in value is rejected. assert_equals: The cookie was rejected. expected "" but got "test=18"
+PASS Cookie with %x12 in value is rejected.
 FAIL Cookie with %x13 in value is rejected. assert_equals: The cookie was rejected. expected "" but got "test=19"
 FAIL Cookie with %x14 in value is rejected. assert_equals: The cookie was rejected. expected "" but got "test=20"
 FAIL Cookie with %x15 in value is rejected. assert_equals: The cookie was rejected. expected "" but got "test=21"

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