After executing command php bin/console ezxmltext:convert-to-richtext tables from the XMLText field will be converted to the <table> tag, when new tables inside the RichText editor are created using <informaltable> tag.

This behavior is causing a different outcome rendered in the frontend, which is causing issues with styling and maintaining.

Steps to reproduce
1. Clean installation of eZ Platform 2.5 or Ibexa DXP 3.2/3.3
2. Install and enable https://github.com/ezsystems/ezplatform-xmltext-fieldtype
3. Login into the back office as admin to create and publish a new Image content Image.
4. Create a new Content Type XML Test containing XML block field called body.
5. Create and Publish a new XML Test Content, with body set to:

<?xml version="1.0" encoding="UTF-8"?>
<section xmlns:custom="http://ez.no/namespaces/ezpublish3/custom/" xmlns:image="http://ez.no/namespaces/ezpublish3/image/" xmlns:xhtml="http://ez.no/namespaces/ezpublish3/xhtml/">
  <paragraph xmlns:tmp="http://ez.no/namespaces/ezpublish3/temporary/">
	 <table class="default" border="0" width="100%" custom:align="center" custom:summary="Lorem ipsum" custom:caption="Lorem ipsum">
		<tr>
		   <td xhtml:width="100%" custom:valign="top">
			  <paragraph>Lorem ipsum dolor sit amet, consectetur adipiscing elit</paragraph>
		   </td>
		</tr>
	 </table>
	 <line>
		<embed view="embed" size="medium" object_id="57" custom:offset="0" custom:limit="48" />
	 </line>
  </paragraph>
</section>

6. Execute the Command converting XML block to RichText field.

php bin/console ezxmltext:convert-to-richtext

and clear the cache.
7. Open Test content again and edit it. Add a second table below the first one and publish Content.

Result
Tables will be rendered differently (see the attachment).

Expected result
Tables will be rendered the same.