[Webkit-unassigned] [Bug 84233] New: onmousemove does not fire at bottom of page when scrolled

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=84233

           Summary: onmousemove does not fire at bottom of page when
                    scrolled
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: JavaScriptGlue
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: gygax at practicomp.ch


I have tested this on Windows under the current release of Chrome (18.0.1025.162 m) and Safari 5.1.5 (7534.55.3).

How to reproduce:

1) Create a non-empty web page (just enought content to make it scrollable)

2) attach a handler to window.onmousemove and have it output clientX/clientY to the console.

3) Load the page into the browser, reduce the window size so that the page can be scrolled, and bring up the console window

4) Scroll the page down some 100 pixels or so.

5) Slowly move the mouse from the top of the client window downward. Notice how events stop firing when reaching a vertical position that is equal to the height of the client window minus the scrolled amount (e.g. if the window is 400px high and you scrolled down 100px, events will stop firing at clientY=500)

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