Is there a way to prevent this fragment of focus outline from being left on the left column? Or is this a chrome bug?
Here is a link to my fiddle
let $li = $('li');
let liLength = $li.length;
let half = Math.floor(liLength / 2);
let $target = $li.eq(half);
$target.addClass('focus');ul {
  margin: 10px;
  columns: 2;
}
li {
  display: block;
  padding: 10px;
  margin-bottom: 20px;
}
li:focus,
li.focus {
  outline: green auto 5px;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<ul>
  <li>Item</li>
  <li>Item</li>
  <li>Item</li>
  <li>Item</li>
  <li>Item</li>
  <li>Item</li>
  <li>Item</li>
  <li>Item</li>
  <li>Item</li>
  <li>Item</li>
</ul>
 
     
    