I'm trying to figure out where this behavior is located that you're talking about. When you select the control, initially, the drop down box will drop down exposing a list of items. If you mouse over an item in the box and select it the item is placed in the input box and the drop down box disappears. Is this the behavior you're experiencing? Or on initial selection the dropdown box opens and then closes, selecting the item under your mouse?
Further, where do you experience the problem? The body editor is an external 3rd party, albeit free, control.
Finally, I haven't set up my business web site yet, so the
vb version of the web-site is still there. I have just tried the drop downs and the expected behavior works for me there using. You might try it there:
http://www.mypcconnection.com