Graham Wapper I found it and I think it was my error.
In the version you are using a </div> is in the wrong place so it is only being used when comments are on
Near the bottom of the script change
<div class="xt_submit">
<input class="xt_button" type="submit" value="{{ data.translations.t_post }}" />
</div>
</form>
</div>
</div>
{% endif %}
{% endblock %}

{% elseif view == 'no_contents' %}

To
<div class="xt_submit">
<input class="xt_button" type="submit" value="{{ data.translations.t_post }}" />
</div>
</form>
</div>
{% endif %}
{% endblock %}
</div>

{% elseif view == 'no_contents' %}

I have also made the change in the code you posted below