Libreoffice converting HTML to PDF on command line produces empty page
<p>When I am using a html document ('<em>SimplePage.html</em>') with the following content</p>

<pre><code>&lt;!DOCTYPE html&gt; 
&lt;html&gt;
  &lt;title&gt;Page Title&lt;/title&gt;
  &lt;body&gt;
    This is just a simple Hello World
  &lt;/body&gt;
&lt;/html&gt;
</code></pre>

<p>Libreoffice (LibreOffice_5.1.2 on Windows 7) produces an pdf having the first page blank and then writing not the full text - instead only "<strong>a simple Hello World</strong>" is shown</p>

<p>I am using the following command line</p>

<pre><code>soffice.exe --headless --convert-to pdf SimplePage.html
</code></pre>

<p>When I do the conversion not in headless mode (opening Libreoffice writer and the using "Export" the generated pdf is correct. Therefore I think it's not a problem of the used HTML.
Does anyone know the reason and a solution to this problem?</p>