谷歌地图fitBounds是否在标记标签上抛出了一个bug?

如果我在Google Maps地图上添加一个带有标签的标记,然后调用fitBounds到另一个区域,除非缩小,否则我仍然会看到没有标记的标签。 是虫子吗?

这是一把小提琴,试着点击米兰按钮: JSFiddle

Html:

<div id="map-canvas"></div>

CSS:

#map-canvas {
    width:100%;
    height:500px;
    position:"absolute";
    top: 0px;
    left: 0px;
    overflow:"hidden";
    background-color:#000;
}

.map-button{    
    margin-top: 10px;
    height: 30px;
    cursor: pointer;
    color: #565656;
    border:0px;
    border-radius: 3px;
    background-color:#fff;
    box-shadow: rgba(0, 0, 0, 0.3) 1px 1px 4px -1px;    
}

.map-button:hover {
    background-color: #ebebeb;
    color: #000;
}

Javascript:

function initialize() {
    var mapOptions = {
        center: new google.maps.LatLng(41.29085, 12.71216),
        zoom: 6,
        gestureHandling: 'greedy'               
    };
    map = new google.maps.Map(document.getElementById("map-canvas"), mapOptions);

    var marker = new google.maps.Marker({
                                    position: map.getCenter(), 
                                    map: map, 
                                    label: {
                                        text:'Roma',
                                        fontSize: '28px'
                                    }
                                });

    var control = document.createElement('button');
    control.innerHTML = 'Milano';
    control.className = 'map-button';

    map.controls[google.maps.ControlPosition.TOP_LEFT].push(control);

    google.maps.event.addDomListener(control, 'click', function (event) {
        var milanBounds = new google.maps.LatLngBounds(
                                                {lat: 45.462818, lng: 9.184145},
                                                {lat: 45.466806, lng: 9.190239});

        map.fitBounds(milanBounds);
    });
}
google.maps.event.addDomListener(window, 'load', initialize);