780444 - when beforeunload event is executed, user string is not shown anymore

Status: RESOLVED DUPLICATE of bug 641509

(Firefox :: Untriaged, defect)

Description

[Oleg]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:6.0) Gecko/20100101 Firefox/6.0
Build ID: 20110811165603

Steps to reproduce:

When register handler for beforeunload event – 
window.onbeforeunload = function() {
return "bla";
}

or through addEventListener – 
window.addEventListener( "beforeunload", function( event ) {
event.returnValue = "bla";
return "bla";
});



Actual results:

when beforeunload is fired, "bla" is not shown in dialog box.


Expected results:

"bla" should be shown in dialog box