When testing the editor in IE7, FF3, and Safari, I notice a difference in how the editor handles invalid code

 

For example, adding <script><script> produces the following results:

 

IE7:  <script><script></body></html></script>

 

Safari: <script></script> 

 

FF:  <script><script><br id="-moz-br-" /></body></html>

 

Should we be seeing different results in these browsers?