Remove doesn't work in cloned object

Remove objects in this code works fine in jquery 1.5, but doesn't work with jquery 1.6:

<!DOCTYPE html>
<html>
<head>
<style>.content {border: 1px solid #333;} .delete {color: red;}</style>
<script src="http://code.jquery.com/jquery-1.5.js"></script>
</head>
<body>
<div id="master">
<div class="content">Some content <span class="delete">Delete</span></div>
</div>
<div class="clone">Clone</div>
<script>
    $(".clone").click(function () {
        $("#master").find(".content").last().clone().appendTo("#master");
    });

    $(".delete").click(function () {
        $(this).parents(".content").remove();
    });
</script>
</body>
</html>

With Jquery 1.6+ I can remove just first element. Why it doesn't work?

Solution

There seems to be an issue with clone() in 1.5.0 that was fixed in 1.5.1 regarding the optional withDataAndEvents parameter.

From the documentation:

In jQuery 1.5.0 the default value was incorrectly true; it was changed back to false in 1.5.1 and up.

Your code should thus be:

$(".clone").click(function () {
    $("#master").find(".content").last().clone(true).appendTo("#master");
});

$(".delete").click(function () {
    $(this).parents(".content").remove();
});