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<!DOCTYPE bugzilla SYSTEM "https://bugs.webkit.org/page.cgi?id=bugzilla.dtd">

<bugzilla version="5.0.4.1"
          urlbase="https://bugs.webkit.org/"
          
          maintainer="admin@webkit.org"
>

    <bug>
          <bug_id>313036</bug_id>
          
          <creation_ts>2026-04-22 14:40:30 -0700</creation_ts>
          <short_desc>[WPE] imported/w3c/web-platform-tests/editing/other/copy-elements-with-css-vars.tentative.html is a flaky test</short_desc>
          <delta_ts>2026-04-23 19:03:09 -0700</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>1</classification_id>
          <classification>Unclassified</classification>
          <product>WebKit</product>
          <component>WPE WebKit</component>
          <version>WebKit Nightly Build</version>
          <rep_platform>Unspecified</rep_platform>
          <op_sys>Unspecified</op_sys>
          <bug_status>NEW</bug_status>
          <resolution></resolution>
          
          
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords></keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          
          <everconfirmed>1</everconfirmed>
          <reporter name="Nikolas Zimmermann">zimmermann</reporter>
          <assigned_to name="Nobody">webkit-unassigned</assigned_to>
          <cc>bugs-noreply</cc>
    
    <cc>fujii</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>2203337</commentid>
    <comment_count>0</comment_count>
    <who name="Nikolas Zimmermann">zimmermann</who>
    <bug_when>2026-04-22 14:40:30 -0700</bug_when>
    <thetext>wktesthunter output for this flaky test across affected bots:

&gt;&gt;&gt; wpe-release &lt;&lt;&lt;
[311774@main-311775@main]     UNKNOWN
311776@main                   NOERROR
[311777@main-311782@main]     UNKNOWN
311783@main                   TEXT PASS (Expected: PASS)
[311784@main-311791@main]     UNKNOWN
311792@main                   NOERROR
311793@main                   UNKNOWN
311794@main                   NOERROR


The bot wpe-release completed 1389 runs on the interval [307795@main-311794@main]
Frequency of results for test: imported/w3c/web-platform-tests/editing/other/copy-elements-with-css-vars.tentative.html
  818 times [58.9%]      -&gt;  NOERROR
  6 times [0.4%]         -&gt;  TEXT CRASH
  359 times [25.8%]      -&gt;  CRASH
  58 times [4.2%]        -&gt;  PASS
  120 times [8.6%]       -&gt;  TEXT
  4 times [0.3%]         -&gt;  TIMEOUT CRASH
  24 times [1.7%]        -&gt;  TEXT PASS

Of those 1389 runs it didn&apos;t match the expectation 47 times [3.4%]
Details of the type and frequency of unmatched expectations:
  6 times [0.4%]         -&gt;  TEXT CRASH (Expected: PASS)
  13 times [0.9%]        -&gt;  CRASH (Expected: PASS)
  4 times [0.3%]         -&gt;  TIMEOUT CRASH (Expected: PASS FAIL CRASH)
  24 times [1.7%]        -&gt;  TEXT PASS (Expected: PASS)

Flakiness factor: 23.0%
    - This test was flaky on 23.0% of the 1389 runs analyzed, either giving different
      results within a single run, or a different result than in the previous run.

&gt;&gt;&gt; wpe-arm64-release &lt;&lt;&lt;
311773@main                   TEXT PASS (Expected: PASS)
[311774@main-311775@main]     UNKNOWN
311776@main                   NOERROR
[311777@main-311781@main]     UNKNOWN
311782@main                   TEXT PASS (Expected: PASS)
311783@main                   NOERROR
[311784@main-311788@main]     UNKNOWN
311789@main                   TEXT PASS (Expected: PASS)
[311790@main-311793@main]     UNKNOWN
311794@main                   NOERROR


The bot wpe-arm64-release completed 1253 runs on the interval [308164@main-311794@main]
Frequency of results for test: imported/w3c/web-platform-tests/editing/other/copy-elements-with-css-vars.tentative.html
  660 times [52.7%]      -&gt;  NOERROR
  4 times [0.3%]         -&gt;  TEXT CRASH
  363 times [29.0%]      -&gt;  CRASH
  142 times [11.3%]      -&gt;  TEXT
  57 times [4.5%]        -&gt;  PASS
  27 times [2.2%]        -&gt;  TEXT PASS

Of those 1253 runs it didn&apos;t match the expectation 43 times [3.4%]
Details of the type and frequency of unmatched expectations:
  4 times [0.3%]         -&gt;  TEXT CRASH (Expected: PASS)
  12 times [1.0%]        -&gt;  CRASH (Expected: PASS)
  27 times [2.2%]        -&gt;  TEXT PASS (Expected: PASS)

Flakiness factor: 28.0%
    - This test was flaky on 28.0% of the 1253 runs analyzed, either giving different
      results within a single run, or a different result than in the previous run.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2203990</commentid>
    <comment_count>1</comment_count>
    <who name="Fujii Hironori">fujii</who>
    <bug_when>2026-04-23 19:02:31 -0700</bug_when>
    <thetext>History: https://results.webkit.org/?suite=layout-tests&amp;test=imported%2Fw3c%2Fweb-platform-tests%2Fediting%2Fother%2Fcopy-elements-with-css-vars.tentative.html&amp;platform=WPE</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2203991</commentid>
    <comment_count>2</comment_count>
    <who name="Fujii Hironori">fujii</who>
    <bug_when>2026-04-23 19:02:45 -0700</bug_when>
    <thetext>311564@main fixed the crash issue.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>2203992</commentid>
    <comment_count>3</comment_count>
    <who name="Fujii Hironori">fujii</who>
    <bug_when>2026-04-23 19:03:09 -0700</bug_when>
    <thetext>https://build.webkit.org/results/WPE-Linux-64-bit-Release-Tests/311904@main%20(26840)/imported/w3c/web-platform-tests/editing/other/copy-elements-with-css-vars.tentative-diff.txt

--- /sdk/webkit/layout-test-results/imported/w3c/web-platform-tests/editing/other/copy-elements-with-css-vars.tentative-expected.txt
+++ /sdk/webkit/layout-test-results/imported/w3c/web-platform-tests/editing/other/copy-elements-with-css-vars.tentative-actual.txt
@@ -1,5 +1,6 @@
 Span text
 Row 1, Cell 1	Row 1, Cell 2
+d
 
 PASS Test serialized html on copy has resolved css values
 FAIL Test for resolving css variables on copy null is not an object (evaluating &apos;span.style&apos;)</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>