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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 - Changing page style to two-column when it contains a TOC causes lockup"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=138903">138903</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Changing page style to two-column when it contains a TOC causes lockup
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>7.0.3.1 release
          </td>
        </tr>

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

        <tr>
          <th>OS</th>
          <td>Windows (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>LibreOffice
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>alan@alankrobinson.co.uk
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Description:
If the style of a page containing a TOC is changed from single-column to
two-column, LO locks up 'not responding'.

The problem only occurs when the TOC is present.

The problem appears to occur when the TOC occupies more than one column.

This may be the same problem as reported in bug report 138900.


Steps to Reproduce:
1. Open the attached document.
2. Modify the default page style so it contains two columns.

Actual Results:
Locks up 'not responding'.

Expected Results:
Not lock up!


Reproducible: Always


User Profile Reset: Yes



Additional Info:
Version: 7.0.3.1 (x64)
Build ID: d7547858d014d4cf69878db179d326fc3483e082
CPU threads: 4; OS: Windows 10.0 Build 19041; UI render: Skia/Raster; VCL: win
Locale: en-GB (en_GB); UI: en-GB
Calc: threaded

If one of the headings is deleted and the TOC regenerated before changing the
number of columns, there’s no lockup. This suggests the problem may be
occurring when the TOC extends into the right-hand column.</pre>
        </div>
      </p>


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