Bug 286392 – [ macOS wk1 ] imported/w3c/web-platform-tests/css/css-grid/subgrid/subgrid-baseline-008.html is flaky.

• Status: NEW
• Component: CSS

[Yasmin Karimi]

imported/w3c/web-platform-tests/css/css-grid/subgrid/subgrid-baseline-008.html 

This test is flaky on macOS wk1.

HISTORY:

https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcss-grid%2Fsubgrid%2Fsubgrid-baseline-008.html

TEXT DIFF:

@@ -6,15 +6,45 @@
 
 
 PASS .item 1
-PASS .item 2
-PASS .item 3
-PASS .item 4
-PASS .item 5
-PASS .item 6
-PASS .item 7
-PASS .item 8
-PASS .item 9
-PASS .item 10
-PASS .item 11
+FAIL .item 2 assert_equals:
+<div data-offset-x="428" class="item last">
+        <span></span><br><span></span>
+      </div>
+offsetLeft expected 428 but got 415
+FAIL .item 3 assert_equals:
+<div data-offset-x="325" class="item first">
+        <span></span><br><span></span>
+      </div>
+offsetLeft expected 325 but got 337
+FAIL .item 4 assert_equals:
+<div data-offset-x="234" class="item last">
+        <span></span><br><span></span>
+      </div>
+offsetLeft expected 234 but got 225
+FAIL .item 5 assert_equals:
+<div data-offset-x="131" class="item first">
+      <span></span><br><span></span>
+    </div>
+offsetLeft expected 131 but got 142
+FAIL .item 6 assert_equals:
+<div data-offset-x="40" class="item last">
+      <span></span><br><span></span>
+    </div>
+offsetLeft expected 40 but got 30
+FAIL .item 7 assert_equals:
+<div data-offset-x="524" class="item small first"></div>
+offsetLeft expected 524 but got 547
+FAIL .item 8 assert_equals:
+<div data-offset-x="393" class="item small last"></div>
+offsetLeft expected 393 but got 405
+FAIL .item 9 assert_equals:
+<div data-offset-x="335" class="item small first"></div>
+offsetLeft expected 335 but got 347
+FAIL .item 10 assert_equals:
+<div data-offset-x="199" class="item small last"></div>
+offsetLeft expected 199 but got 205
+FAIL .item 11 assert_equals:
+<div data-offset-x="141" class="item small first"></div>
+offsetLeft expected 141 but got 147
 PASS .item 12
 

DIFF URL:

https://build.webkit.org/results/Apple-Sequoia-Debug-AppleSilicon-WK1-Tests/289258@main%20(1010)/imported/w3c/web-platform-tests/css/css-grid/subgrid/subgrid-baseline-008-pretty-diff.html

REPRODUCIBILITY:

I was able to reproduce this failure on MacOS Sequoia 15.2 (24C101 / arm64) at ToT with the following command:

run-webkit-tests imported/w3c/web-platform-tests/css/css-grid/subgrid/subgrid-baseline-008.html --iterations 45 -1

[Radar WebKit Bug Importer]

<rdar://problem/143441140>

[EWS]

Test gardening commit 289269@main (90d2366c213b): <https://commits.webkit.org/289269@main>

Reviewed commits have been landed. Closing PR #39419 and removing active labels.