[Webkit-unassigned] [Bug 280490] New: REGRESSION (284225 at main) : [ macOS iOS ] 2x imported/w3c/web-platform-tests/mathml/presentation-markup/operators/*

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=280490

            Bug ID: 280490
           Summary: REGRESSION (284225 at main) : [ macOS iOS ] 2x
                    imported/w3c/web-platform-tests/mathml/presentation-ma
                    rkup/operators/*
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: MathML
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: aviduya at apple.com
                CC: fred.wang at free.fr, hchen at igalia.com, ntim at apple.com,
                    webkit-bot-watchers-bugzilla at group.apple.com,
                    webkit-bug-importer at group.apple.com

imported/w3c/web-platform-tests/mathml/presentation-markup/operators/size-and-position-of-stretchy-fences-with-default-font-001.html
imported/w3c/web-platform-tests/mathml/presentation-markup/operators/stretchy-largeop-with-default-font-2.html
are constant failures

HISTORY: 
https://results.webkit.org/?suite=layout-tests&suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fmathml%2Fpresentation-markup%2Foperators%2Fsize-and-position-of-stretchy-fences-with-default-font-001.html&test=imported%2Fw3c%2Fweb-platform-tests%2Fmathml%2Fpresentation-markup%2Foperators%2Fstretchy-largeop-with-default-font-2.html

DIFF:
imported/w3c/web-platform-tests/mathml/presentation-markup/operators/size-and-position-of-stretchy-fences-with-default-font-001.html
-PASS Inner binary operator should not affect position and size of outer fences.
-PASS Fences are stretched symmetrically with respect to the math axis
+FAIL Inner binary operator should not affect position and size of outer fences. assert_approx_equals: expected 42.640625 +/- 2 but got 39.796875
+FAIL Fences are stretched symmetrically with respect to the math axis assert_approx_equals: expected 71.640625 +/- 2 but got 68.1171875
 (
 (
 x

imported/w3c/web-platform-tests/mathml/presentation-markup/operators/stretchy-largeop-with-default-font-2.html
-FAIL Test that non-stretchy largeops are bigger in display mode. assert_greater_than: width of largeop '⨇' expected a number greater than 6.640625 but got 2.640625
+FAIL Test that non-stretchy largeops are bigger in display mode. assert_greater_than: width of largeop '⫼' expected a number greater than 13.28125 but got 13.265625

DIFF LINK:
https://build.webkit.org/results/Apple-Sequoia-Release-AppleSilicon-WK2-Tests/284313%40main%20(83)/imported/w3c/web-platform-tests/mathml/presentation-markup/operators/size-and-position-of-stretchy-fences-with-default-font-001-diff.txt
https://build.webkit.org/results/Apple-Sequoia-Release-AppleSilicon-WK2-Tests/284313%40main%20(83)/imported/w3c/web-platform-tests/mathml/presentation-markup/operators/stretchy-largeop-with-default-font-2-diff.txt

REPRODUCIBILITY: 
I was able to reproduce the issue using command. 
run-webkit-tests <test_name> --iterations=10 

DESCRIPTION: 
In 284225 at main changes were made in MathML layout.

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