I'm afraid it does the same on the demo page.
It only appears to do this in IE not in FF, I was using IE8.
If you go into HTML mode and add this code:
<a target="_blank" href="http://cutesoft.net/"><strong><span style="font-size: 10pt;">If you wish to return to the home page at any time please click here</span></strong></a>
then select 'Normal' from the bottom of the page, then select HTML mode again you will see the code now says:
<a href="http://cutesoft.net/"><strong><span style="target: _blankfont-size: 10pt">If you wish to return to the home page at any time please click here</span></strong></a>
Not good !!!
Thanks