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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>239990</bug_id>
          
          <creation_ts>2022-05-02 16:37:45 -0700</creation_ts>
          <short_desc>[ iOS ][ macOS ] css3/calc/transitions-dependent.html is a flaky failure</short_desc>
          <delta_ts>2026-01-12 09:08:57 -0800</delta_ts>
          <reporter_accessible>1</reporter_accessible>
          <cclist_accessible>1</cclist_accessible>
          <classification_id>1</classification_id>
          <classification>Unclassified</classification>
          <product>WebKit</product>
          <component>Animations</component>
          <version>WebKit Nightly Build</version>
          <rep_platform>Unspecified</rep_platform>
          <op_sys>Unspecified</op_sys>
          <bug_status>NEW</bug_status>
          <resolution></resolution>
          
          <see_also>https://bugs.webkit.org/show_bug.cgi?id=126142</see_also>
          <bug_file_loc></bug_file_loc>
          <status_whiteboard></status_whiteboard>
          <keywords>InRadar</keywords>
          <priority>P2</priority>
          <bug_severity>Normal</bug_severity>
          <target_milestone>---</target_milestone>
          
          
          <everconfirmed>1</everconfirmed>
          <reporter name="Karl Rackler">rackler</reporter>
          <assigned_to name="Karl Rackler">rackler</assigned_to>
          <cc>dino</cc>
    
    <cc>graouts</cc>
    
    <cc>koivisto</cc>
    
    <cc>simon.fraser</cc>
    
    <cc>webkit-bot-watchers-bugzilla</cc>
    
    <cc>webkit-bug-importer</cc>
          

      

      

      

          <comment_sort_order>oldest_to_newest</comment_sort_order>  
          <long_desc isprivate="0" >
    <commentid>1865999</commentid>
    <comment_count>0</comment_count>
    <who name="Karl Rackler">rackler</who>
    <bug_when>2022-05-02 16:37:45 -0700</bug_when>
    <thetext>Description:
css3/calc/transitions-dependent.html

The iOS test on 1/11/2022 at r287874 improved the constant failure to passing on iOS until 3/21/2022 at r291584 where it becomes a flaky failure. 
 
The first failure that I saw on the dashboard for Big Sur was 2/15/2022 at r289815, but this does not appear relevant to causing this issue.  The first failure that I saw on the dashboard for Monterey was 2/15/2022 at r289815.

REPRODUCTION STEPS
I can reproduce this on Tot (r293682), but unable to reproduce to find the regression point.  Also, note you can run this without --iterations and it passes for iOS, but fails with the it.
i.e. 
run-webkit-tests --root 293682 --ios-simulator --device-type iPhone 12 --exit-after-n-failures 1 --exit-after-n-crashes-or-timeouts 1 css3/calc/transitions-dependent.html = Passes
run-webkit-tests --root 293682 --ios-simulator --device-type iPhone 12 --iterations 2 --exit-after-n-failures 1 --exit-after-n-crashes-or-timeouts 1 css3/calc/transitions-dependent.html = Failure

[iOS]
Command:
run-webkit-tests --root 293682 --ios-simulator --device-type iPhone 12 --iterations 2 --exit-after-n-failures 1 --exit-after-n-crashes-or-timeouts 1 css3/calc/transitions-dependent.html = Failure

Result: 
[2/2] css3/calc/transitions-dependent.html failed unexpectedly (text diff)
Exiting early after 2 failures. 2 tests run.

0 tests ran as expected, 2 didn&apos;t:

Unexpected flakiness: text-only failures (1)
  css3/calc/transitions-dependent.html [ Failure Pass ]

[macOS]
Command:
run-webkit-tests --root 293682 --exit-after-n-failures 1 --exit-after-n-crashes-or-timeouts 1 --iterations 50 -f --no-retry css3/calc/transitions-dependent.html

Result: 
8 tests ran as expected, 3 didn&apos;t (39 didn&apos;t run):


Unexpected flakiness: text-only failures (1)
  css3/calc/transitions-dependent.html [ Failure Pass ] 

History:
https://results.webkit.org/?suite=layout-tests&amp;test=css3%2Fcalc%2Ftransitions-dependent.html&amp;platform=mac&amp;platform=ios&amp;limit=50000

Diff:
--- /Volumes/Data/worker/Apple-Monterey-Debug-WK1-Tests/build/layout-test-results/css3/calc/transitions-dependent-expected.txt
+++ /Volumes/Data/worker/Apple-Monterey-Debug-WK1-Tests/build/layout-test-results/css3/calc/transitions-dependent-actual.txt
@@ -1,12 +1,22 @@
+CONSOLE MESSAGE: A transition for property width could not be found
+CONSOLE MESSAGE: A transition for property width could not be found
+CONSOLE MESSAGE: A transition for property width could not be found
+CONSOLE MESSAGE: A transition for property width could not be found
+CONSOLE MESSAGE: A transition for property width could not be found
+CONSOLE MESSAGE: A transition for property width could not be found
+CONSOLE MESSAGE: A transition for property width could not be found
+CONSOLE MESSAGE: A transition for property width could not be found
+CONSOLE MESSAGE: A transition for property width could not be found
+CONSOLE MESSAGE: A transition for property width could not be found
 This tests that calc() expressions depending on transitioning elements behave correctly.
-PASS - &quot;width&quot; property for &quot;inner&quot; element at 0s was: 60
-PASS - &quot;width&quot; property for &quot;inner&quot; element at 0.25s was: 110
-PASS - &quot;width&quot; property for &quot;inner&quot; element at 0.5s was: 160
-PASS - &quot;width&quot; property for &quot;inner&quot; element at 0.75s was: 210
+FAIL - &quot;width&quot; property for &quot;inner&quot; element at 0s expected: 60 but saw: 260
+FAIL - &quot;width&quot; property for &quot;inner&quot; element at 0.25s expected: 110 but saw: 260
+FAIL - &quot;width&quot; property for &quot;inner&quot; element at 0.5s expected: 160 but saw: 260
+FAIL - &quot;width&quot; property for &quot;inner&quot; element at 0.75s expected: 210 but saw: 260
 PASS - &quot;width&quot; property for &quot;inner&quot; element at 1s was: 260
-PASS - &quot;width&quot; property for &quot;innerTransition&quot; element at 0s was: 60
-PASS - &quot;width&quot; property for &quot;innerTransition&quot; element at 0.25s was: 167.5
-PASS - &quot;width&quot; property for &quot;innerTransition&quot; element at 0.5s was: 275
-PASS - &quot;width&quot; property for &quot;innerTransition&quot; element at 0.75s was: 382.5
+FAIL - &quot;width&quot; property for &quot;innerTransition&quot; element at 0s expected: 60 but saw: 490
+FAIL - &quot;width&quot; property for &quot;innerTransition&quot; element at 0.25s expected: 167.5 but saw: 490
+FAIL - &quot;width&quot; property for &quot;innerTransition&quot; element at 0.5s expected: 275 but saw: 490
+FAIL - &quot;width&quot; property for &quot;innerTransition&quot; element at 0.75s expected: 382.5 but saw: 490
 PASS - &quot;width&quot; property for &quot;innerTransition&quot; element at 1s was: 490</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1866000</commentid>
    <comment_count>1</comment_count>
    <who name="Radar WebKit Bug Importer">webkit-bug-importer</who>
    <bug_when>2022-05-02 16:38:47 -0700</bug_when>
    <thetext>&lt;rdar://problem/92640544&gt;</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1866003</commentid>
    <comment_count>2</comment_count>
    <who name="Karl Rackler">rackler</who>
    <bug_when>2022-05-02 16:59:05 -0700</bug_when>
    <thetext>I have marked this test as a flaky failure this issue is investigated.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1866006</commentid>
    <comment_count>3</comment_count>
    <who name="Karl Rackler">rackler</who>
    <bug_when>2022-05-02 17:02:41 -0700</bug_when>
    <thetext>Pull request: https://github.com/WebKit/WebKit/pull/462</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1866008</commentid>
    <comment_count>4</comment_count>
    <who name="EWS">ews-feeder</who>
    <bug_when>2022-05-02 17:05:18 -0700</bug_when>
    <thetext>Test gardening commit r293702 (250193@main): &lt;https://commits.webkit.org/250193@main&gt;

Reviewed commits have been landed. Closing PR #462 and removing active labels.</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1866222</commentid>
    <comment_count>5</comment_count>
    <who name="Karl Rackler">rackler</who>
    <bug_when>2022-05-03 13:33:48 -0700</bug_when>
    <thetext>Pull request: https://github.com/WebKit/WebKit/pull/476</thetext>
  </long_desc><long_desc isprivate="0" >
    <commentid>1866223</commentid>
    <comment_count>6</comment_count>
    <who name="Karl Rackler">rackler</who>
    <bug_when>2022-05-03 13:37:07 -0700</bug_when>
    <thetext>(In reply to Karl Rackler from comment #5)
&gt; Pull request: https://github.com/WebKit/WebKit/pull/476

This was not meant for this bug, please disregard.</thetext>
  </long_desc>
      
      

    </bug>

</bugzilla>