Issue Summary

After migrating a page to the new Confluence editor, extra columns are displayed due to mismatched column declarations from the legacy page code.
This issue appeats only on view mode

Steps to Reproduce

Storage Format Sample

<table>
  <tr>
    <th>Month</th>
    <th>Savings</th>
  </tr>
  <tr>
    <td>January</td>
    <td>$100</td>
  </tr>
  <tr>
    <td>February</td>
    <td>$80</td>
  </tr>
  <tr>
    <td colspan="7">Sum: $180</td>
  </tr>
</table>

1. Open a Confluence page that was created using the legacy editor and contains a table.

1. View/Edit the page in the new editor and observe the table layout.

Expected Results

The table should display the correct number of columns as originally intended in the legacy editor.

Actual Results

The table displays one or more extra columns, causing layout and visualization issues.

Workaround

Manualy edit the page code using the API and fix the incorrect colspan value