Font ligature icons in Microsoft edge

I'm using google material Icon font library for the majority of icons in a web app. I've started debugging for Microsoft Edge and realised none of them are showing.

Is this a known issue? I can switch to actual icon images if need be but it would be a massive job at this stage.

Try to use F12 developer tools to check whether the Google Icons CSS reference load success.

The following code works well on Edge 42 and Edge 44 version:

<link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
<style type="text/css">
    @font-face {
        font-family: 'Material Icons';
        font-style: normal;
        font-weight: 400;
        src: url(https://example.com/MaterialIcons-Regular.eot); /* For IE6-8 */
        src: local('Material Icons'), local('MaterialIcons-Regular'), url(https://example.com/MaterialIcons-Regular.woff2) format('woff2'), url(https://example.com/MaterialIcons-Regular.woff) format('woff'), url(https://example.com/MaterialIcons-Regular.ttf) format('truetype');
    }

    .material-icons {
        font-family: 'Material Icons';
        font-weight: normal;
        font-style: normal;
        font-size: 24px; /* Preferred icon size */
        display: inline-block;
        line-height: 1;
        text-transform: none;
        letter-spacing: normal;
        word-wrap: normal;
        white-space: nowrap;
        direction: ltr;
        /* Support for all WebKit browsers. */
        -webkit-font-smoothing: antialiased;
        /* Support for Safari and Chrome. */
        text-rendering: optimizeLegibility;
        /* Support for Firefox. */
        -moz-osx-font-smoothing: grayscale;
        /* Support for IE. */
        font-feature-settings: 'liga';
    }
</style>
<i class="material-icons">face</i>

The output screenshot as below: