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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 - Long Freezes After Scheduler Update"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=109183">109183</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Long Freezes After Scheduler Update
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>6.0.0.0.alpha0+ Master
          </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>Calc
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>lukebenes@hotmail.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="http://bugs.documentfoundation.org/attachment.cgi?id=134704" name="attach_134704" title="Test Spreadsheet to demonstrate the bug">attachment 134704</a> <a href="http://bugs.documentfoundation.org/attachment.cgi?id=134704&action=edit" title="Test Spreadsheet to demonstrate the bug">[details]</a></span>
Test Spreadsheet to demonstrate the bug

I noticed several spreadsheets are become unresponsive when scrolling with the
keyboard. 

Steps to Reproduce
1. With a recent build of libreoffice open the attachment
2. Put the cursor in N1
3. Press the down arrow to make the screen scroll

Actual Results:
1. Usually by the time you hit N39, the LibreOffice UI will freeze and become
unresponsive for several minutes.

I was able to reproduce this on a Win 10 desktop and laptop with 64bit builds.
So far I have bisected the regression down to this range:

<a href="https://cgit.freedesktop.org/libreoffice/core/log/?qt=range&q=dc63cc326ee5757124cef45e470d290e6e32002e..51bb68928933bf5d72efb9193f1be6af6e72c80f">https://cgit.freedesktop.org/libreoffice/core/log/?qt=range&q=dc63cc326ee5757124cef45e470d290e6e32002e..51bb68928933bf5d72efb9193f1be6af6e72c80f</a>+</pre>
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      </p>


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