Editor keeps adding   to the end some tags and divs

[beggin]

I have this really annoying problem with the editor. Whenever I edit a page and click on the editor,   is added to the end of some divs and p tags. I have tried disabling the spellchecker, resetting the enterMode settings.

The only way I can fix this is by removing it from the HTML source. The moment I go back to the non-HTML editor and click on it, it comes back.

Here's an example:

Code:

<div class="menu">
<p>1 - Yes</p>
<p>2 - No</p>
</div>

Is changed into:

Code:

<div class="menu">
<p>1 - Yes</p>
<p>2 - No</p>
</div>
<p>
    &nbsp;</p>

Any idea what may be causing this?