[tex4ht] Double headings in table of contents

[Michal Hoftich]

Hello Lorenzo,

>
>I see many (not all) entries of my TOC in HTML as duplicated.  The elements
>are:
>
><span class="subsectionToc">1.1.1 <a href="#x1-260001"
>id="QQ2-1-65">Undisclosed text</a></span>
>
><span class="subsectionToc"><a href="#Q1-1-66">1.1.1
>Undisclosed text</a></span>
>
>of course I don't see this in pdfLaTeX.
>
>I'm working on a rather complex setting including some confidential
>content, so I can't produce a MVE, but perhaps the id names mean something
>to you and you can spot a known pathology and post some hints at how to
>troubleshoot and fix the issue?
>
this is not expected, it will be probably caused by some package you 
use. I think that you can construct a MWE by using your document 
preamble and few dummy sections. We cannot tell much more without that.

Best regards,
Michal