Table's merge row copied incorrectly in editor

Table's merge row not copied correctly into table

Step to reproduce:

1. Create a table with merge row. Use the following source

   <table class="relative-table wrapped" style="width: 100.0%;"><colgroup><col style="width: 20.0%;" /><col style="width: 19.2952%;" /><col style="width: 20.1762%;" /><col style="width: 11.9824%;" /><col style="width: 10.3965%;" /><col style="width: 9.07489%;" /><col style="width: 9.07489%;" /></colgroup>
   <tbody>
   <tr>
   <th rowspan="2">
   <p>Individual Objective</p></th>
   <th rowspan="2">Company Objective</th>
   <th rowspan="2">Team Objective</th>
   <th rowspan="2">Owner</th>
   <th rowspan="2">Key Results</th>
   <th colspan="2">
   <div class="content-wrapper">
   <p class="auto-cursor-target" style="text-align: center;">Ratings</p></div></th></tr>
   <tr>
   <td colspan="1">Interim</td>
   <td colspan="1">Final</td></tr>
   <tr>
   <td rowspan="4">Test Objective</td>
   <td rowspan="4">Test Comp Obj.<br /><br /><br /></td>
   <td rowspan="4">Test Team Obj.<br /><br /><br /><br /></td>
   <td rowspan="4"><ac:link><ri:user ri:userkey="8a8aee8b5c688258015cea437a850013" /></ac:link><br /><br /></td>
   <td colspan="1">xxxxx</td>
   <td colspan="1"><br /></td>
   <td colspan="1"><br /></td></tr>
   <tr>
   <td colspan="1">xxxxx</td>
   <td colspan="1"><br /></td>
   <td colspan="1"><br /></td></tr>
   <tr>
   <td colspan="1">xxx</td>
   <td colspan="1"><br /></td>
   <td colspan="1"><br /></td></tr>
   <tr>
   <td colspan="1">xxxx</td>
   <td colspan="1"><br /></td>
   <td colspan="1"><br /></td></tr>
   <tr>
   <td rowspan="4"><br /><br /><br /><br /></td>
   <td rowspan="4"><br /><br /><br /><br /></td>
   <td rowspan="4">
   <div class="content-wrapper">
   <p><br /></p></div><br /><br /><br /></td>
   <td rowspan="4"><br /><br /><br /><br /></td>
   <td colspan="1"><br /></td>
   <td colspan="1"><br /></td>
   <td colspan="1"><br /></td></tr>
   <tr>
   <td colspan="1"><br /></td>
   <td colspan="1"><br /></td>
   <td colspan="1"><br /></td></tr>
   <tr>
   <td colspan="1"><br /></td>
   <td colspan="1"><br /></td>
   <td colspan="1"><br /></td></tr>
   <tr>
   <td colspan="1"><br /></td>
   <td colspan="1"><br /></td>
   <td colspan="1"><br /></td></tr></tbody></table>

2. Copy the row using the "Copy Table Row" into next row. (check out this video on how to reproduce Latest test on 6.3.4.mp4 )

Expected Behavior

All content should be copied correctly into merge row

Actual Behavior

The content in merge row became new row

Latest test on 6.3.4.mp4