Hello,

I have identified this in the backoffice!

To resolve this problem, i have modified your css background url for your SVG icon.

I have get your css "style.css" and i have modified the SVG in the url.

I have created a sass function to transform standard svg to url encoded svg.

// Replace letters
@function str-replace($string, $search, $replace: '') {
    $index: str-index($string, $search);

    @if $index {
        @return str-slice($string, 1, $index - 1) + $replace + str-replace(str-slice($string, $index + str-length($search)), $search, $replace);
    }

    @return $string;
}

// Encode symbols
@function url-encode($string) {
    $map: (
        "%": "%25",
        "<": "%3C",
        ">": "%3E",
        " ": "%20",
        "!": "%21",
        "*": "%2A",
        "'": "%27",
        '"': "%22",
        "(": "%28",
        ")": "%29",
        "{": "%7B",
        "}": "%7D",
        ";": "%3B",
        ":": "%3A",
        "@": "%40",
        "&": "%26",
        "=": "%3D",
        "+": "%2B",
        "$": "%24",
        ",": "%2C",
        "/": "%2F",
        "?": "%3F",
        "#": "%23",
        "[": "%5B",
        "]": "%5D"
    );

    $new: $string;

    @each $search, $replace in $map {
        $new: str-replace($new, $search, $replace);
    }

    @return $new;
}

// Format the SVG as a URL
@function inline-svg($string) {
    @return url('data:image/svg+xml;charset=utf8,#{url-encode($string)}');
}

You can use it like:

// Portion of your CSS
.icon-umd-link {
    background: inline-svg("<svg id='Layer_1' data-name='Layer 1' xmlns='http://www.w3.org/2000/svg' viewBox='0 0 66.95 27.6'><defs><style>.cls-1{fill:none;stroke:#515054;stroke-linecap:round;stroke-linejoin:round;stroke-width:7.1px;}</style></defs><title>link</title><path id='Layer0_0_1_STROKES' data-name='Layer0 0 1 STROKES' class='cls-1' d='M62.4,12.75h5.35A10.16,10.16,0,0,1,77.95,23v0a11.1,11.1,0,0,1-.3,2.6,9.9,9.9,0,0,1-2.7,4.65,9.67,9.67,0,0,1-6.35,3,6.86,6.86,0,0,1-.85,0H52.15a9.88,9.88,0,0,1-7.25-3,9.9,9.9,0,0,1-2.7-4.65,11.1,11.1,0,0,1-.3-2.6v-.5M33.65,33.25H28.3a10.2,10.2,0,0,1-9.9-7.65A10.48,10.48,0,0,1,18.1,23v0a9.88,9.88,0,0,1,3-7.25,9.67,9.67,0,0,1,6.35-2.95,6.86,6.86,0,0,1,.85-.05H43.9A10.24,10.24,0,0,1,54.15,23v0q0,.25,0,.45' transform='translate(-14.55 -9.2)'/></svg>") no-repeat;
    //background: url("data:image/svg+xml;utf8,<svg id='Layer_1' data-name='Layer 1' xmlns='http://www.w3.org/2000/svg' viewBox='0 0 66.95 27.6'><defs><style>.cls-1{fill:none;stroke:#515054;stroke-linecap:round;stroke-linejoin:round;stroke-width:7.1px;}</style></defs><title>link</title><path id='Layer0_0_1_STROKES' data-name='Layer0 0 1 STROKES' class='cls-1' d='M62.4,12.75h5.35A10.16,10.16,0,0,1,77.95,23v0a11.1,11.1,0,0,1-.3,2.6,9.9,9.9,0,0,1-2.7,4.65,9.67,9.67,0,0,1-6.35,3,6.86,6.86,0,0,1-.85,0H52.15a9.88,9.88,0,0,1-7.25-3,9.9,9.9,0,0,1-2.7-4.65,11.1,11.1,0,0,1-.3-2.6v-.5M33.65,33.25H28.3a10.2,10.2,0,0,1-9.9-7.65A10.48,10.48,0,0,1,18.1,23v0a9.88,9.88,0,0,1,3-7.25,9.67,9.67,0,0,1,6.35-2.95,6.86,6.86,0,0,1,.85-.05H43.9A10.24,10.24,0,0,1,54.15,23v0q0,.25,0,.45' transform='translate(-14.55 -9.2)'/></svg>") no-repeat;
    display: inline-block;
    -webkit-font-smoothing: antialiased;
    line-height: 20px;
    text-align: center;
    width: 20px;
    height: 10px;
    vertical-align: middle;
    margin: 5px;
    cursor: pointer;
}

I have tested this solution on IE11,FF,Chrome,Edge and Opera.

Thanks for your answer