LayoutTests/fast/multicol/progression-reverse-overflow.html

<style>
    div.test {
        width: 100px;
        height: 100px;
        -webkit-column-width: 100px;
        -webkit-column-gap: 0;
        -webkit-column-fill: auto;
        -webkit-column-progression: reverse;
        column-width: 100px;
        column-gap: 0;
        column-fill: auto;
        overflow: hidden;
    }

    div.test > div {
        block-size: 100%;
    }

    div.test > div:first-child {
        background-color: red;
    }

    div.test > div:last-child {
        background-color: green;
    }
</style>
<div class="test">
    <div></div><div></div>
</div>
<div class="test" style="direction: rtl;">
    <div></div><div></div>
</div>
<div class="test" style="-webkit-writing-mode: horizontal-bt;">
    <div></div><div></div>
</div>
<div class="test" style="-webkit-writing-mode: vertical-lr;">
    <div></div><div></div>
</div>
<div class="test" style="-webkit-column-axis: vertical;">
    <div></div><div></div>
</div>
<div class="test" style="-webkit-writing-mode: vertical-lr; -webkit-column-axis: horizontal;">
    <div></div><div></div>
</div>
<script>
    var tests = document.querySelectorAll("div.test");
    for (var i = 0; i < tests.length; ++i) {
        var test = tests[i];
        if (test.scrollLeft)
            test.scrollLeft = 0;
        else
            test.scrollLeft = test.scrollWidth;
        if (test.scrollTop)
            test.scrollTop = 0;
    }
</script>