VisualEdit plugin remove tags when there is no data between them
<div><p>line 1</p></div>
<div><p><a></a></p></div> <!-- this line disappears -->
<div><p>line 2</p></div>
It could be very usefull for empty paragraphs, but it is very annoying when you have to insert objects like flash movies, which have a source code structure without data between tags :
<object>
<param></param>
<embed></embed>
</object>