[Webkit-unassigned] [Bug 172855] New: REGRESSION rendering issues with U+20D7 when separated from preceding character by span

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Fri Jun 2 06:54:02 PDT 2017


https://bugs.webkit.org/show_bug.cgi?id=172855

            Bug ID: 172855
           Summary: REGRESSION rendering issues with U+20D7 when separated
                    from preceding character by span
           Product: WebKit
           Version: Safari 10
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Text
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: peter.krautzberger at mathjax.org
                CC: mmaxfield at apple.com

When U+20D7 (and possibly other combining characters) is separated from the preceding character by a span element, the combination renders badly in Safari 10.

In particular, Safari 10 renders this differently from other browsers (see [2]). 

Safari 10 also renders more test cases badly than Safari 9 did. On the other hand, WebKitGTK+ 2.16.3 has no issues.

* minimal example [1]
* screenshots (archive) [2]
* original context [3]

[1] https://codepen.io/pkra/pen/yXBRxW
[2] https://github.com/mathjax/MathJax/files/1047779/cbt_2358181_2472234.zip
[3] https://github.com/mathjax/MathJax/issues/1709#issuecomment-305648698


Thanks in advance.

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