Is Google Maps fitBounds throwing a bug on a marker label?

A possible bug when you have a marker with a label and you call fitBounds on the map

by Jumpy

HTML

<script src="https://maps.googleapis.com/maps/api/js?sensor=false&amp;libraries=geometry,places&amp;ext=.js"></script>
<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);