Phaser 2.4.4 timing issue

HTML

<script src="//cdn.jsdelivr.net/phaser/2.4.4/phaser.min.js"></script>
<!-- Use the "External Resources" panel to the left to swap out the Phaser version.

Phaser 2.4.4 exhibits the timing problem: //cdn.jsdelivr.net/phaser/2.4.4/phaser.min.js

Phaser 2.4.3 and below do not: //cdn.jsdelivr.net/phaser/2.4.3/phaser.min.js
-->

JavaScript

var game = new Phaser.Game(500, 100, Phaser.AUTO, null, {
    create: function () {
        game.stage.backgroundColor = 0xffffff;
        game.add.text(500, 10, 'Starting at: ' + Date.now()).anchor.x = 1;
        var tween = game.add.tween({});
        tween.to({}, 5000);
        tween.onComplete.add(function () {
            tweenNow = Date.now();
            game.add.text(500, 60, 'Tween complete at: ' + tweenNow).anchor.x = 1;
        });
        tween.start();
    },
});