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    <body><span class="vcard"><a class="email" href="mailto:bugzilla@mkr.email" title="Mike <bugzilla@mkr.email>"> <span class="fn">Mike</span></a>
</span> changed
          <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - FILEOPEN: DOCX - Writer shows immediately after opening file the 'There are changes to be saved' icon [floppy disk with star]"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=112797">bug 112797</a>
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          <tr>
            <th>What</th>
            <th>Removed</th>
            <th>Added</th>
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           <td style="text-align:right;">Attachment #136660 is obsolete</td>
           <td>
                
           </td>
           <td>1
           </td>
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         <tr>
           <td style="text-align:right;">Attachment #136661 is obsolete</td>
           <td>
                
           </td>
           <td>1
           </td>
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           <td style="text-align:right;">Attachment #136662 is obsolete</td>
           <td>
                
           </td>
           <td>1
           </td>
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         <tr>
           <td style="text-align:right;">Attachment #136663 is obsolete</td>
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           <td>1
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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - FILEOPEN: DOCX - Writer shows immediately after opening file the 'There are changes to be saved' icon [floppy disk with star]"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=112797#c16">Comment # 16</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - FILEOPEN: DOCX - Writer shows immediately after opening file the 'There are changes to be saved' icon [floppy disk with star]"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=112797">bug 112797</a>
              from <span class="vcard"><a class="email" href="mailto:bugzilla@mkr.email" title="Mike <bugzilla@mkr.email>"> <span class="fn">Mike</span></a>
</span></b>
        <pre>Created <span class=""><a href="http://bugs.documentfoundation.org/attachment.cgi?id=137846" name="attach_137846" title="Manually fixed Minimum test case">attachment 137846</a> <a href="http://bugs.documentfoundation.org/attachment.cgi?id=137846&action=edit" title="Manually fixed Minimum test case">[details]</a></span>
Manually fixed Minimum test case

I have NOT a coder, but I did some trial-and-error with the minimum test case
and found a hint:

1. Open minimum test case ("FILEOPEN DOCX - file in modified state directly
after opening of file.docx", 5kb only)
2. Open word\document.xml in the DOCX
3. Delete the lines 

<w:r>
<w:instrText> PAGEREF  \h </w:instrText>
</w:r>

4. Save the test case again as a DOCX
5. Open the new DOCX
6. New DOCX is not opened in "modified state".

P.S.
I opened the lines in Open XML Productivity tool and they mean:

          Run run2 = new Run();
          FieldCode fieldCode1 = new FieldCode();
          fieldCode1.Text = " PAGEREF \\h ";

(Can't understand it, I'm not a coder)</pre>
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