[Webkit-unassigned] [Bug 235257] New: Two bopomofo tone marks are not moved to the correct place in vertical text with a particular bopomofo font

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=235257

            Bug ID: 235257
           Summary: Two bopomofo tone marks are not moved to the correct
                    place in vertical text with a particular bopomofo font
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Text
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mmaxfield at apple.com
                CC: mmaxfield at apple.com

See https://cmex-30.github.io/Bopomofo_on_Web/testpage/index.html

In the last box, these two characters are not placed correctly:

- ˫ U+02EB MODIFIER LETTER YANG DEPARTING TONE MARK
- ˪ U+02EA MODIFIER LETTER YIN DEPARTING TONE MARK

Compare the positioning to Chrome.

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