[Webkit-unassigned] [Bug 215321] New: SVG text element with text-anchor: middle is misaligned using icon font

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=215321

            Bug ID: 215321
           Summary: SVG text element with text-anchor: middle is
                    misaligned using icon font
           Product: WebKit
           Version: Safari 13
          Hardware: Macintosh
                OS: macOS 10.15
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: SVG
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: dnegley at gmail.com
                CC: zimmermann at kde.org

Created attachment 406294

  --> https://bugs.webkit.org/attachment.cgi?id=406294&action=review

Example SVG file

Consider the attached svg file, which contains this snippet

    <g transform="translate(200 200)">
      <rect width="200" height="58" rx="4" ry="4" fill="lime">
      </rect>
      <circle cx="29" cy="29" r="19" fill="yellow">
      </circle>
      <text x="29" y="29"
        style="dominant-baseline: central; font: 400 38px / 14px "Material Icons Round"; text-anchor: middle;">expand_more</text>
    </g>

along with the embedded "Material Icons Round" font in the <defs> section.

the text and the circle have the same x attribute, therefore they should be positioned in the same spot.

in Safari, the text element is too far to the left. it appears as if the position is based on the measured string "expand_more" and not the measured text element.

using a shorter icon name like <text>build</text> will result in an icon placed farther to the right, although the text elements are the same size.

removing the font name and using a single character like "+" in the text element produces the expected result.

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