[Webkit-unassigned] [Bug 204195] New: offsetParent is wrong if the offset parent is inside some shadow DOM

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu Nov 14 04:13:55 PST 2019


https://bugs.webkit.org/show_bug.cgi?id=204195

            Bug ID: 204195
           Summary: offsetParent is wrong if the offset parent is inside
                    some shadow DOM
           Product: WebKit
           Version: Safari 13
          Hardware: Macintosh
                OS: macOS 10.15
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: DOM
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: pascal.spadone at gmail.com

Created attachment 383553

  --> https://bugs.webkit.org/attachment.cgi?id=383553&action=review

Plunker that reproduces the issue

If the offset parent of an element is part of some shadow DOM, .offsetParent incorrectly returns some node higher up the tree, outside of the shadow DOM. 

The following pluncker (also attached) demonstrates the issue: https://embed.plnkr.co/nxDd9HrA0XiN72WAbZBF/ . In MacOS Safari 13.0.3 as well as iOS 13.1 Safari, the reported .offsetParent is the body instead of the expected relative-positionned div.

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