[Webkit-unassigned] [Bug 181304] New: macOS and iOS render zero width joiners differently

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu Jan 4 12:51:19 PST 2018


            Bug ID: 181304
           Summary: macOS and iOS render zero width joiners differently
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: craig.hockenberry at gmail.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

Unicode text which contains zero width joiners displays differently on macOS and iOS.

To reproduce:

1) Open the following page on both platforms:


2) Compare how the code samples are rendered

Expected result:

The rendering should be identical.

Actual result:

The rendering is quite different. iOS appears to be displaying the zero width joiner as a space character.

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