The event would fire when the map zoom level has changed.
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ADMIN EDIT: The new zoom level should be accessible in the event handler.
If I set a global font icon type, the Map icons are broken, because they are missing the k-font-icon CSS class. A possible workaround is to apply the missing styles to the rendered k-icon class:
In the meantime, one can use SVG icons or the following CSS rule as a workaround:
.k-map .k-icon {
width: 1em;
height: 1em;
outline: 0;
font-size: 16px;
font-family: "WebComponentsIcons";
font-style: normal;
font-variant: normal;
font-weight: normal;
line-height: 1;
speak: none;
text-transform: none;
text-decoration: none;
flex-shrink: 0;
display: inline-flex;
flex-flow: row nowrap;
align-items: center;
justify-content: center;
vertical-align: middle;
position: relative;
-moz-osx-font-smoothing: grayscale;
-webkit-font-smoothing: antialiased;
}