changed 'display: none' to 'display: inline-block' within the refreshLayout function
MODIFY
www/Map.js
www/Map.js
@@ -77,7 +77,7 @@ utils.extend(Map, Overlay);
Map.prototype.refreshLayout = function() {
// Webkit redraw mandatory
// http://stackoverflow.com/a/3485654/697856
- document.body.style.display = 'none';
+ document.body.style.display = 'inline-block';
document.body.offsetHeight;
document.body.style.display = '';

changed 'display: none' to 'display: inline-block' within the refreshLayout function