RedactorX removes DIV tags in tables - is there a config that will resolve this?

RedactorX removes DIV tags in tables. This can be confirmed on the old RedactorX demo page (imperavi.com/legacy/redactorx/examples/initialization/base-example/) using a simple test like

<table><tr><td><div>Hello World</div></td></tr></table>

If you flip from code to HTML preview and back to code, you can quickly see that the above is converted to:

<table>
    <tbody>
        <tr>
            <td>
                Hello World

            </td>
        </tr>
    </tbody>
</table>

Using the same HTML in the latest Redactor Demo, does not have this issue, DIV tags remain in place:

<table>
    <tbody>
        <tr>
            <td>
                <div>
                    Hello World
                </div>
            </td>
        </tr>
    </tbody>
</table>

I am hoping there is a config setting, or extra JS, we can use to allow DIV tags within tables when using RedactorX, but so far I can’t figure out how to do this. Anyone know how this might be accomplished?

Or, is there a way to bump up EE to use the latest Redactor, or perhaps there is a plugin, or this bump up to the latest Redactor is almost ready to be rolled out in EE?