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        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_UNCONFIRMED "
   title="UNCONFIRMED - Very slow switching between sheets in the attached xlsx document"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=131595">131595</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Very slow switching between sheets in the attached xlsx document
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>6.3.5.2 release
          </td>
        </tr>

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

        <tr>
          <th>OS</th>
          <td>Linux (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>Calc
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>suokunlong@126.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="http://bugs.documentfoundation.org/attachment.cgi?id=159039" name="attach_159039" title="Test xlsx file">attachment 159039</a> <a href="http://bugs.documentfoundation.org/attachment.cgi?id=159039&action=edit" title="Test xlsx file">[details]</a></span>
Test xlsx file

Steps to reproduce:

1. Open the attached xlsx document.

2. Try to click to second sheet tab (to switch to that tab).
--> Very slow switching to the 2nd tab. After successful switch, the
soffice.bin process eats 3.6 GB of my RAM, while my system RAM is 8 GB.

3. After successfully switched to the second tab, try to click some cells.
--> Very slow navigating between between cells.

Reproduced in
Version: 7.0.0.0.alpha0+
Build ID: f6f37e3341f2a3ad292af1a923dbc33d81e439c9
CPU threads: 4; OS: Linux 5.5; UI render: default; VCL: gtk3; 
Locale: zh-CN (zh_CN.UTF-8); UI-Language: en-US
Calc: threaded

And in 6.3.5.2
Fedora 31 64.

Step 2 and 3 is fast in MSO running in my VirtalBox WinXP guest machine with
only 1 GB total RAM.</pre>
        </div>
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