Sharing – Sharedaddy – Print on IE

WordPress: 4.5
Jetpack: 4.0.2

Print functionality on IE 11 is not working. All other browsers work perfectly (icons are hidden on mobile by design). I have narrowed down the problem to sharing.js

If I force IE to use printUrl( uid , ref ); rather than print(); it works fine.

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from webpage:

<li class="share-print">
	<a
		rel="nofollow"
		data-shared=""
		class="share-print sd-button share-icon no-text"
		href="https://localhost/junk/#print"
		target="_blank"
		title="Click to print">
		<span></span>
		<span class="sharing-screen-reader-text">Click to print (Opens in new window)</span>
	</a>
</li>

__________________________________________________________________________
from sharing.js:

var printUrl = function ( uniqueId, urlToPrint ) {
	$( 'body:first' ).append( '<iframe style="position:fixed;top:100;left:100;height:1px;width:1px;border:none;" id="printFrame-' + uniqueId + '" name="printFrame-' + uniqueId + '" src="' + urlToPrint + '" onload="frames[\'printFrame-' + uniqueId + '\'].focus();frames[\'printFrame-' + uniqueId + '\'].print();"></iframe>' );
};

// Print button
$( this ).find( 'a.share-print' ).click( function() {
	var ref = $( this ).attr( 'href' ),
		do_print = function() {
			if ( ref.indexOf( '#print' ) === -1 ) {
				var uid = new Date().getTime();
				printUrl( uid , ref );
			} else {
			 	print();
			}
		};

	// Is the button in a dropdown?
	if ( $( this ).parents( '.sharing-hidden' ).length > 0 ) {
		$( this ).parents( '.inner' ).slideUp( 0, function() {
			do_print();
		} );
	} else {
		do_print();
	}

	return false;
} );

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