[Webkit-unassigned] [Bug 252133] New: Using LinearGradient fill on <path> shows line artefact above element bounding box

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=252133

            Bug ID: 252133
           Summary: Using LinearGradient fill on <path> shows line
                    artefact above element bounding box
           Product: WebKit
           Version: Safari 16
          Hardware: iPhone / iPad
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: SVG
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: x-alex-95+bugzilla at yandex.ru
                CC: sabouhallawa at apple.com, zimmermann at kde.org

Created attachment 464959

  --> https://bugs.webkit.org/attachment.cgi?id=464959&action=review

Example screenshot 1

<path> elements which are using LinearGradient as fill occasionally display line artefacts at the top of their bounding box. The issue occurs when scaling the svg, either when viewed on its own through zoom, or when using an <img> element on a webpage. The issue seems to be triggered on certain scaling levels, which are different for each object: in practice this manifests as lines flickering as you zoom in. 

To the best of my knowledge and testing, desktop Safari is unaffected and does not reproduce this behavior.

Attached are several example screenshots as well as a sample <svg>.

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