[Webkit-unassigned] [Bug 39620] New: Clicks inside button elements are sometimes discarded when the mouse moves

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=39620

           Summary: Clicks inside button elements are sometimes discarded
                    when the mouse moves
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh Intel
        OS/Version: Mac OS X 10.6
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Forms
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: bryan at evilscheme.org


Created an attachment (id=56929)
 --> (https://bugs.webkit.org/attachment.cgi?id=56929)
image of a button with inner text box

When a click originates inside one element of a button (e.g., the button text) and terminates outside of that element (e.g., another element, or just the button box) the onClick() method isn't triggered.

This is reproducible on websites like facebook.  You can reproduce by clicking inside the text box, holding the mouse down, and then releasing the mouse button outside of the text box, but still inside the button.  While the facebook buttons are styled such that this doesn't happen by accident all that often, buttons with slightly more padding cause this issue frequently.

Both safari and chrome exhibit this behavior, but firefox does not.

Attached is a button from facebook that shows the inner text box inside the larger button box.  A click that Goes from inside-to-outside will not register.

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