jQuery UI Sortable in scrolling div

Question

This question is not about horizontal scrolling. It is about using the jQuery UI sortable functionality when it is in a horizontally scrolled area.

I have created a fiddle as a demonstration: http://jsfiddle.net/shhQuiet/t2vnfmh4/4/embedded/result/

I have tried something like this, to no avail:

$('#scroller').scroll(function() {
    $('.items').sortable("refreshPositions");
});

Here are the deets:

markup

<div id="scroller">
<div class="items">
    <div class="item">One</div>
    <div class="item">Two</div>
    <div class="item">Three</div>
    <div class="item">Four</div>
    <div class="item">Five</div>
    <div class="item">Six</div>
</div>
<div class="items">
    <div class="item">One</div>
    <div class="item">Two</div>
    <div class="item">Three</div>
    <div class="item">Four</div>
    <div class="item">Five</div>
    <div class="item">Six</div>
</div>
... removed some repetitions for brevity ...
</div>
</p>

JS

$('.items').sortable({
    axis: 'y',
    containment: 'parent'
});

CSS

.item {
    border: 1px #aaa solid;
    width: 2in;
}

.items {
    height: 100%;
    display: inline-block;
    overflow-y: auto;
    overflow-x: hidden;
}

#scroller {
    overflow-x: scroll;
    overflow-y: hidden;
    white-space: nowrap;
}

Answer 1

Too late now since you've already accepted an answer, but I solved the very same problem by adding this to the sortable config:

start: function (event, ui) {
    ui.helper.css('left', ui.originalPosition.left);
}