[Webkit-unassigned] [Bug 241906] New: Sticky positioned element is not working correctly inside Table

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=241906

            Bug ID: 241906
           Summary: Sticky positioned element is not working correctly
                    inside Table
           Product: WebKit
           Version: Safari 15
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: fanshundee at 126.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

Created attachment 460440

  --> https://bugs.webkit.org/attachment.cgi?id=460440&action=review

test file

Note that this can only be reproduced in safari15.1

Steps to reproduce:
1. Open the attached file in a browser(safari15.1)
2. Scroll the table

Current behaviour:
yellow element is started scroll inside table container.

Expected behaviour:
yellow element should be positioned at top while scroll inside table container

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