[Webkit-unassigned] [Bug 37640] New: beforeload event listener messes up dragging Bing Maps

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu Apr 15 00:12:25 PDT 2010


https://bugs.webkit.org/show_bug.cgi?id=37640

           Summary: beforeload event listener messes up dragging Bing Maps
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
               URL: http://maps.bing.com
        OS/Version: Mac OS X 10.5
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: bweinstein at apple.com
                CC: hyatt at apple.com, aroben at apple.com, sfalken at apple.com


STEPS TO REPRODUCE:
1) Go to maps.bing.com
2) Try to drag the map around slowly, notice that it is working fine, and is
smooth.

3) Run: 

javascript:document.addEventListener("beforeload",function(event){},false)

in the URL field.

4) Try dragging the map slowly again

EXPECTED RESULTS:
The map still drags smoothly

ACTUAL RESULTS:
The dragging flickers a lot and is almost unusable.

This flickering is coming from the beforeload event handler that is doing
nothing.

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