[Webkit-unassigned] [Bug 187606] New: Multiple presses of spacebar on once checked and focused radio button does not fire subsequent events

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=187606

            Bug ID: 187606
           Summary: Multiple presses of spacebar on once checked and
                    focused radio button does not fire subsequent events
           Product: WebKit
           Version: Safari 11
          Hardware: Unspecified
                OS: OS X 10.11
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Forms
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jase.williams at gmail.com
                CC: cdumez at apple.com, wenson_hsieh at apple.com

Steps to reproduce the problem:
1. Navigate to https://codepen.io/jasonwilliams1/pen/XBbZjL
2. Focus on the textbox
3. Press shift-tab to move focus into the radio button group
4. Press spacebar to check the radio button
5. Press spacebar to redundantly check the radio button
6. observe no additional click event in the console

What is the expected behavior?
Right now its not clear, I don't see this mentioned in the specification either. 

What went wrong?
I should be expecting additional click events in the console, but only 1 fires

Firefox, Edge and Internet Explorer fire multiple events for each time i press spacebar

Chrome version: 67.0.3396.99  Channel: stable
OS Version: 10.0
Flash Version: 

Arises from: https://github.com/facebook/react/issues/4854#issuecomment-404543424

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