Here is the solution
This explains this issue and here is the work around that I received from Jason in another post.
Possible Bug:
Yeah, i just verified that.
HTML Editor will try to force the paragraph tag around any changes that you make, the work around is to edit the title, go to source code where you will see:
<p>Your Title</p>
and remove the p tags. Don't click the source button again, or they will be added back, just click the update button.