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    <body><span class="vcard"><a class="email" href="mailto:dgp-mail@gmx.de" title="Dieter <dgp-mail@gmx.de>"> <span class="fn">Dieter</span></a>
</span> changed
          <a class="bz_bug_link 
          bz_status_UNCONFIRMED "
   title="UNCONFIRMED - You cannot add files when creating a new theme in writer."
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=134222">bug 134222</a>
          <br>
             <table border="1" cellspacing="0" cellpadding="8">
          <tr>
            <th>What</th>
            <th>Removed</th>
            <th>Added</th>
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         <tr>
           <td style="text-align:right;">Blocks</td>
           <td>
                
           </td>
           <td>99671
           </td>
         </tr>

         <tr>
           <td style="text-align:right;">CC</td>
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           </td>
           <td>dgp-mail@gmx.de
           </td>
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      <p>
        <div>
            <b><a class="bz_bug_link 
          bz_status_UNCONFIRMED "
   title="UNCONFIRMED - You cannot add files when creating a new theme in writer."
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=134222#c1">Comment # 1</a>
              on <a class="bz_bug_link 
          bz_status_UNCONFIRMED "
   title="UNCONFIRMED - You cannot add files when creating a new theme in writer."
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=134222">bug 134222</a>
              from <span class="vcard"><a class="email" href="mailto:dgp-mail@gmx.de" title="Dieter <dgp-mail@gmx.de>"> <span class="fn">Dieter</span></a>
</span></b>
        <pre>I can't reproduce it with

Version: 7.0.0.0.beta2 (x64)
Build ID: 1c213561a365b5666167321de68c9977500c9612
CPU threads: 4; OS: Windows 10.0 Build 18363; UI render: Skia/Raster; VCL: win
Locale: de-DE (de_DE); UI: en-GB
Calc: CL

but I'm aso not sure, if I've understood the problem:
1. I can add a new theme. New theme is displayed in the gallery list
2. I can add files to that new theme (choose directory and press select)

Have you read
<a href="https://help.libreoffice.org/7.0/en-GB/text/shared/01/gallery_files.html?System=WIN&DbPAR=WRITER&HID=cui/ui/galleryfilespage/GalleryFilesPage#bm_id3151331">https://help.libreoffice.org/7.0/en-GB/text/shared/01/gallery_files.html?System=WIN&DbPAR=WRITER&HID=cui/ui/galleryfilespage/GalleryFilesPage#bm_id3151331</a>

I agree, that the process could be improved, I would expect, that files are
displayed, if you open "Find Files".</pre>
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        <div id="referenced">
          <hr style="border: 1px dashed #969696">
          <b>Referenced Bugs:</b>
          <ul>
              <li>
                [<a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [META] Gallery bugs and enhancements"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=99671">Bug 99671</a>] [META] Gallery bugs and enhancements
              </li>
          </ul>
        </div>
        <br>

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