easeTo bug

<!DOCTYPE html>
<html>
<head>
    <meta charset='utf-8' />
    <title></title>
    <meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
    <script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.32.1/mapbox-gl.js'></script>
    <link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.32.1/mapbox-gl.css' rel='stylesheet' />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.4.0/d3.min.js"></script>
    <style>
        body { margin:0; padding:0; }
        #map { position:absolute; top:0; bottom:0; width:100%; }
    </style>
</head>
<body>

<div id='map'></div>
<script>
    mapboxgl.accessToken = 'pk.eyJ1IjoiZ2lzZmVlZGJhY2siLCJhIjoiY2l2eDJndmtjMDFkeTJvcHM4YTNheXZtNyJ9.-HNJNch_WwLIAifPgzW2Ig';
    var map = new mapboxgl.Map({
        container: 'map', // container id
        style: 'mapbox://styles/mapbox/streets-v9',//'mapbox://styles/gisfeedback/ciwmwq2gb00fa2ppabho4z39c/', //stylesheet location
        center: [144.97, -37.82], // starting position
        zoom: 15,
        minZoom: 14,
        pitch: 45
    });

var posNo = 0;
    var positions = [
        [144.96, -37.8, 15],
        [144.98, -37.84, 15],
        [144.97, -37.82, 15]

];
    function moveCamera() {
        var pos = positions[posNo];
        posNo = (posNo + 1) % positions.length;
        map.easeTo({
            center: [pos[0], pos[1]],
            zoom: pos[2],
            duration: 5000
        });
    }
    map.on('moveend', _ => setTimeout(moveCamera, 5000));
    map.on('load', _ => setTimeout(moveCamera, 5000));
</script>
</body>
</html>

https://api.tiles.mapbox.com/mapbox-gl-js/v0.32.1/mapbox-gl.js

https://cdnjs.cloudflare.com/ajax/libs/d3/4.4.0/d3.min.js