Ordered lists "start" attribute is not taken into account

Input description: Microsoft Word document with numbered item across several table rows.

Generated HTML:

<tr>
    <td>
        <ol>
            <li/>
        </ol>
    </td>
</tr>
<tr>
    <td>
        <ol start="2">
            <li/>
        </ol>
    </td>
</tr>

Actual XWiki result:

|(((
1.
)))
|(((
1.
)))

Expected XWiki result: the second numbered item should start at "2".