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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_UNCONFIRMED "
   title="UNCONFIRMED - Widgets have transparent background"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=114485">114485</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Widgets have transparent background
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>LibreOffice
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>5.4.3.2 release
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>UNCONFIRMED
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>graphics stack
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>libreoffice-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>davidedmundson@kde.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="http://bugs.documentfoundation.org/attachment.cgi?id=138458" name="attach_138458" title="Screenshot of the problem">attachment 138458</a> <a href="http://bugs.documentfoundation.org/attachment.cgi?id=138458&action=edit" title="Screenshot of the problem">[details]</a></span>
Screenshot of the problem

Widgets rendered by the VCL toolkit don't have alpha on the backing store set
properly. The screenshot explains it best. 
We also have it in the grey area behind the white document in writer.

Problem exists in multiple window managers. Turning off WM compositing masks
the problem.

In libreoffice GL acceleration is off (and apitrace shows no calls)
VCL backend is GTK. Changing the VCL toolkit doesn't seem to make a difference.

It's fine on my main machine, this happens on a specific ARM64 laptop. Whereas
other apps (Qt4, Qt5, GTK2, GTK3) all work fine. I assume it's something quirky
with our X drivers that libreoffice isn't handling the same.

Happy to get any other information requested.

(reproducible with libreoffice 5.1 and 5.4)</pre>
        </div>
      </p>


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