The rich:editor component changes the source code if you switch from viewMode 'source' to viewMode 'visual', for instance:
<html>
<head>
<title>RichEditor Component</title>
</head>
<body>
<table>
<tr>
<td>test</td>
</tr>
</table>
</body>
</html>
is changed to:
<p>RichEditor Component</p>
<table border="0">
<tbody>
<tr>
<td>test</td>
</tr>
</tbody>
</table>
which is definetly not the same;-)
Can this feature be disabled?