showdownjs/test/features/tables/#406.does-not-render-one-column-tables.html

<table>
    <thead>
    <tr>
        <th>some header</th>
    </tr>
    </thead>
    <tbody>
    <tr>
        <td>some content</td>
    </tr>
    </tbody>
</table>
<table>
    <thead>
    <tr>
        <th>some header</th>
    </tr>
    </thead>
    <tbody>
    </tbody>
</table>
<table>
    <thead>
    <tr>
        <th>some header</th>
    </tr>
    </thead>
    <tbody>
    <tr>
        <td>some content</td>
    </tr>
    <tr>
        <td>some content</td>
    </tr>
    <tr>
        <td>some content</td>
    </tr>
    <tr>
        <td>some content</td>
    </tr>
    <tr>
        <td>some content</td>
    </tr>
    </tbody>
</table>
<table>
    <thead>
    <tr>
        <th style="text-align:left;">some header</th>
    </tr>
    </thead>
    <tbody>
    <tr>
        <td style="text-align:left;">some content</td>
    </tr>
    </tbody>
</table>
<table>
    <thead>
    <tr>
        <th style="text-align:right;">some header</th>
    </tr>
    </thead>
    <tbody>
    <tr>
        <td style="text-align:right;">some content</td>
    </tr>
    </tbody>
</table>
<table>
    <thead>
    <tr>
        <th style="text-align:center;">some header</th>
    </tr>
    </thead>
    <tbody>
    <tr>
        <td style="text-align:center;">some content</td>
    </tr>
    </tbody>
</table>