Thanks Eric.  I've already tried the BreakElement property but that hasn't helped.  If I understand the documentation, that property is used to determine which tags to insert when Enter is pressed.  In my case, I haven't pressed Enter yet, I'm just typing text.

 

On your example page, I selected "Br" mode and typed the word "TEST" into the Normal view.  When I selected HTML view, I saw this:

 

 <p>TEST</p>

 

And it only happens in IE.  That's what I'm trying to stop from happening -- the insertion of the <p> tags.