[Webkit-unassigned] [Bug 279105] New: SVG Rendering Issues on iOS 18 Beta: Parabolic Graphs Breaking

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=279105

            Bug ID: 279105
           Summary: SVG Rendering Issues on iOS 18 Beta: Parabolic Graphs
                    Breaking
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: iPhone / iPad
                OS: iOS 18
            Status: NEW
          Severity: Major
          Priority: P2
         Component: SVG
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: exendahal at gmail.com
                CC: sabouhallawa at apple.com, zimmermann at kde.org

Created attachment 472433

  --> https://bugs.webkit.org/attachment.cgi?id=472433&action=review

Graph Sample

I have an SVG file that primarily consists of paths and lines, used to render graphs within a Cordova application. After updating to the latest iOS 18 beta, I noticed that the parabolic graphs drawn using paths are not rendering correctly—they appear broken, especially at the ends.
To further investigate, I transferred an HTML file containing the SVG elements to an iPad running iOS 18 beta 7 and opened it using the Files app. The issue persists, with the SVG paths appearing broken. If you zoom in on the components slightly, the problem becomes even more noticeable.
The issue seems isolated to the latest iOS 18 beta.
I've attached an image preview of the broken SVG on the iPad running iOS 18 beta, as well as the HTML file for reference.

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