[Webkit-unassigned] [Bug 218456] New: REGRESSION (r269245): 3 LFC tests asserting in WebCore::Layout::LayoutContext::verifyAndOutputMismatchingLayoutTree

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=218456

            Bug ID: 218456
           Summary: REGRESSION (r269245): 3 LFC tests asserting in
                    WebCore::Layout::LayoutContext::verifyAndOutputMismatc
                    hingLayoutTree
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ryanhaddad at apple.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

The following tests are consistently failing an assertion on debug macOS bots:

fast/layoutformattingcontext/table-cell-baseline-offset-simple.html
fast/layoutformattingcontext/table-cell-baseline-offset-simple2.html
fast/layoutformattingcontext/table-with-margin-content-simple.html

https://results.webkit.org/?suite=layout-tests&suite=layout-tests&suite=layout-tests&test=fast%2Flayoutformattingcontext%2Ftable-cell-baseline-offset-simple.html&test=fast%2Flayoutformattingcontext%2Ftable-cell-baseline-offset-simple2.html&test=fast%2Flayoutformattingcontext%2Ftable-with-margin-content-simple.html

https://build.webkit.org/results/Apple-Mojave-Debug-WK2-Tests/r269247%20(12863)/fast/layoutformattingcontext/table-cell-baseline-offset-simple-stderr.txt
https://build.webkit.org/results/Apple-Mojave-Debug-WK2-Tests/r269247%20(12863)/fast/layoutformattingcontext/table-cell-baseline-offset-simple2-stderr.txt
https://build.webkit.org/results/Apple-Mojave-Debug-WK2-Tests/r269247%20(12863)/fast/layoutformattingcontext/table-with-margin-content-simple-stderr.txt

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