[Webkit-unassigned] [Bug 214743] New: Emoji with position: relative does not repaint when updated

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=214743

            Bug ID: 214743
           Summary: Emoji with position: relative does not repaint when
                    updated
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mihai at quip.com

Test case: http://persistent.info/webkit/test-cases/emoji-repaint.html

Click on the toggleEmoji() button. The displayed emoji should cycle between a few emoji (the expected one is logged to the console), but it does not. Resizing the window or otherwise triggering a repaint does make it update.

The emoji is updated by setting the nodeValue of a text node. Another necessary part of the repro is the fact that the element uses position: relative.

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